View Filing Data

Year Ended

Supplemental Cash Flow Information

December 31, 2019

Cash paid for amounts included in the measurement of operating lease liabilities

Operating ROU assets obtained in exchange for lease obligations

Debt (Tables)

12 Months Ended

Dec. 31, 2019

Information concerning short-term borrowings is as follows:

December 31	2019			2018
Short-term borrowings	$	61.0		$	49.9
Weighted-average interest rates		7.7	%		8.4	%

Summary of Long-Term Debt

A summary of long-term debt is as follows:

December 31	2019		2018
Euro-denominated notes:
€500.0 due June 2026	$	555.8	$	567.8
€400.0 due September 2022		447.1		456.8
Other		9.5		0.9
		1,012.4		1,025.5
Less current maturities		—		0.2
Long-term debt	$	1,012.4	$	1,025.3

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenues from services	$ 20,863,500,000	$ 21,991,200,000	$ 21,034,300,000
Cost of services	17,488,400,000	18,412,200,000	17,549,700,000
Gross profit	3,375,100,000	3,579,000,000.0	3,484,600,000
Selling and administrative expenses, excluding goodwill impairment charge	2,666,200,000	2,782,300,000	2,695,400,000
Goodwill impairment charge	64,000,000.0
Selling and administrative expenses	2,730,200,000	2,782,300,000	2,695,400,000
Operating profit	644,900,000	796,700,000	789,200,000
Interest and other (income) expenses, net	(40,600,000)	42,000,000.0	51,900,000
Earnings before income taxes	685,500,000	754,700,000	737,300,000
Provision for income taxes	219,800,000	198,000,000.0	191,900,000
Net earnings	$ 465,700,000	$ 556,700,000	$ 545,400,000
Net earnings per share - basic (in dollars per share)	$ 7.78	$ 8.62	$ 8.13
Net earnings per share - diluted (in dollars per share)	$ 7.72	$ 8.56	$ 8.04
Weighted average shares - basic (in shares)	59.9	64.6	67.1
Weighted average shares - diluted (in shares)	60.3	65.1	67.9

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 1,025.8	$ 591.9
Accounts receivable, less allowance for doubtful accounts of $113.5 and $115.7, respectively	5,273.1	5,276.1
Prepaid expenses and other assets	185.6	129.1
Total current assets	6,484.5	5,997.1
Other Assets
Goodwill	1,260.1	1,297.1
Intangible assets, less accumulated amortization of $389.4 and $367.7, respectively	268.6	246.3
Operating lease right-of-use asset	448.5
Other assets	618.8	826.7
Total other assets	2,596.0	2,370.1
Property and Equipment
Land, buildings, leasehold improvements and equipment	605.5	613.6
Less: accumulated depreciation and amortization	462.2	461.0
Net property and equipment	143.3	152.6
Total assets	9,223.8	8,519.8
Current Liabilities
Accounts payable	2,474.9	2,266.7
Employee compensation payable	206.4	209.7
Accrued liabilities	545.4	411.0
Accrued payroll taxes and insurance	649.7	729.8
Value added taxes payable	504.0	508.6
Short-term borrowings and current maturities of long-term debt	61.0	50.1
Total current liabilities	4,441.4	4,175.9
Other liabilities
Long-term debt	1,012.4	1,025.3
Long-term operating lease liability	336.7
Other long-term liabilities	671.8	620.1
Total other liabilities	2,020.9	1,645.4
Shareholders’ Equity
Common stock, $.01 par value, authorized 125,000,000 shares, issued 117,190,883 and 116,795,899 shares, respectively	1.2	1.2
Capital in excess of par value	3,370.6	3,337.5
Retained earnings	3,494.1	3,157.7
Accumulated other comprehensive loss	(441.0)	(399.8)
Treasury stock at cost, 58,517,128 and 56,044,485 shares, respectively	(3,681.9)	(3,471.7)
Total ManpowerGroup shareholders' equity	2,743.0	2,624.9
Noncontrolling interests	18.5	73.6
Total shareholders’ equity	2,761.5	2,698.5
Total liabilities and shareholders’ equity	$ 9,223.8	$ 8,519.8

Goodwill - Changes in Carrying Value of Goodwill by Reportable Segment (Parenthetical) (Details) - USD ($)	3 Months Ended				12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2019	Apr. 03, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Goodwill					$ 1,260,100,000		$ 1,297,100,000		$ 1,343,000,000.0
Goodwill, accumulated impairment loss					577,400,000		513,400,000	$ 513,400,000
Impairment charge	$ 0		$ 0	$ 0	64,000,000.0
Corporate
Goodwill [Roll Forward]
Goodwill					63,900,000		65,500,000		$ 65,500,000
Goodwill, accumulated impairment loss					278,200,000		278,200,000	278,200,000
Jefferson Wells \| Corporate
Goodwill [Roll Forward]
Goodwill					55,500,000
Americas \| United States
Goodwill [Roll Forward]
Goodwill					490,300,000		476,500,000	476,500,000
Americas \| United States \| Jefferson Wells
Goodwill [Roll Forward]
Goodwill					545,800,000		532,000,000.0
Southern Europe
Goodwill [Roll Forward]
Goodwill						$ 33,800,000
Southern Europe \| France
Goodwill [Roll Forward]
Goodwill					67,300,000		68,900,000	76,300,000
Southern Europe \| Italy
Goodwill [Roll Forward]
Goodwill					4,600,000		4,800,000	5,000,000.0
Right Management
Goodwill [Roll Forward]
Goodwill, accumulated impairment loss					235,200,000		235,200,000	$ 235,200,000
Northern Europe
Goodwill [Roll Forward]
Goodwill, accumulated impairment loss					60,200,000
Northern Europe \| Germany
Goodwill [Roll Forward]
Goodwill					67,200,000		$ 129,200,000
Impairment charge		$ 60,200,000
APME
Goodwill [Roll Forward]
Goodwill, accumulated impairment loss					$ 3,800,000
APME \| New Zealand
Goodwill [Roll Forward]
Impairment charge		$ 3,800,000

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Non- controlling Interests
Balance, beginning of period at Dec. 31, 2016	$ 2,446.4	$ 1.2	$ 3,227.2	$ 2,291.3	$ (426.1)	$ (2,731.7)	$ 84.5
Balance, beginning of period (in shares) at Dec. 31, 2016		115,115,748
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	545.4			545.4
Other comprehensive income (loss)	137.9				137.9
Issuances under equity plans	26.1		44.2			(18.1)
Issuances under equity plans (in shares)		1,187,981
Share-based compensation expense	28.7		28.7
Dividends	(123.7)			(123.7)
Repurchases of common stock	(203.9)					(203.9)
Noncontrolling interest transactions	0.7		2.5				(1.8)
Balance, end of period at Dec. 31, 2017	2,857.6	$ 1.2	3,302.6	2,713.0	(288.2)	(2,953.7)	82.7
Balance, end of period (in shares) at Dec. 31, 2017		116,303,729
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	556.7			556.7
Other comprehensive income (loss)	(96.3)				(96.3)
Issuances under equity plans	(12.1)		5.2			(17.3)
Issuances under equity plans (in shares)		492,170
Share-based compensation expense	27.8		27.8
Dividends	(127.3)			(127.3)
Repurchases of common stock	(500.7)					(500.7)
Noncontrolling interest transactions	(7.2)		1.9				(9.1)
Balance, end of period at Dec. 31, 2018	2,698.5	$ 1.2	3,337.5	3,157.7	(399.8)	(3,471.7)	73.6
Balance, end of period (in shares) at Dec. 31, 2018		116,795,899
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain reclassified due to new accounting guidance on investments				15.3	(15.3)
Net earnings	465.7			465.7
Other comprehensive income (loss)	(41.2)				(41.2)
Issuances under equity plans	(0.2)		7.0			(7.2)
Issuances under equity plans (in shares)		394,984
Share-based compensation expense	26.3		26.3
Dividends	(129.3)			(129.3)
Repurchases of common stock	(203.0)					(203.0)
Noncontrolling interest transactions	(55.3)		(0.2)				(55.1)
Balance, end of period at Dec. 31, 2019	$ 2,761.5	$ 1.2	$ 3,370.6	$ 3,494.1	$ (441.0)	$ (3,681.9)	$ 18.5
Balance, end of period (in shares) at Dec. 31, 2019		117,190,883

Income Taxes - Summary of Net Operating Loss Carryforwards (Details) $ in Millions	Dec. 31, 2019 USD ($)
United States Federal and Non-United States
Income Tax Contingency [Line Items]
2020	$ 2.1
2021	5.3
2022	3.8
2023	3.9
2024	5.7
Thereafter	25.2
No expirations	353.4
Total net operating loss carryforwards	399.4
United States State
Income Tax Contingency [Line Items]
2020	0.2
2021	3.0
2022	11.1
2023	9.8
2024	57.3
Thereafter	87.8
No expirations	0.0
Total net operating loss carryforwards	$ 169.2

Debt - Summary of Long-Term Debt (Parenthetical) (Details) - EUR (€)	Dec. 31, 2019	Jun. 22, 2018
Notes due June 2026
Debt Instrument [Line Items]
Principal amount	€ 500,000,000.0	€ 500,000,000.0
€400 due September 2022
Debt Instrument [Line Items]
Principal amount	€ 400,000,000.0

Summary of Significant Accounting Policies - Schedule of Goodwill, Finite-Lived Intangible Assets and Indefinite-Lived Intangible Assets (Parenthetical) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2018
Total intangible assets
Goodwill, accumulated impairment loss	$ 577.4	$ 513.4	$ 513.4
Tradenames
Total intangible assets
Indefinite-lived, accumulated impairment loss	$ 139.5	$ 139.5

Net Earnings Per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Net Earnings Per Share

(6) Net Earnings Per Share

The calculation of net earnings per share - basic and net earnings per share - diluted were as follows:

Year Ended December 31	2019		2018		2017
Net earnings available to common shareholders:	$	465.7	$	556.7	$	545.4
Weighted-average common shares outstanding (in millions):
Weighted-average common shares outstanding - basic		59.9		64.6		67.1
Effect of dilutive securities - stock options		—		0.1		0.2
Effect of other share-based awards		0.4		0.4		0.6
Weighted-average common shares outstanding - diluted		60.3		65.1		67.9
Net earnings per share - basic	$	7.78	$	8.62	$	8.13
Net earnings per share - diluted	$	7.72	$	8.56	$	8.04

There were certain share-based awards excluded from the calculation of net earnings per share - diluted for the year ended December 31, 2019 and 2018, because their impact was anti-dilutive. No share-based awards were excluded from the calculation for the year ended December 31, 2017. The number, exercise prices and weighted-average remaining life of these antidilutive awards were as follows:

	2019		2018		2017
Shares (in thousands)		401		264		—
Exercise price	$	99	$	109	$	—
Weighted-average remaining life	0.9 years		1.2 years			—

Income Taxes - Income Tax Reconciliation (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 21, 2017
Income Tax [Line Items]
French business tax, gross		$ 69.5	$ 74.8	$ 72.1
Repatriation of non-United States earnings		(17.8)	2.5	69.7
United States Tax Act and French tax reform	$ (73.7)		3.2	(73.7)
French Business Tax
Income Tax [Line Items]
Non-United States tax rate difference:		$ 54.9	$ 59.1	$ 46.9
United States
Income Tax [Line Items]
U.S. Federal statutory rate (as percent)		21.00%	21.00%	35.00%
French business tax difference
Income Tax [Line Items]
Non-United States tax rate difference:		$ (9.3)	$ (10.1)	$ 0.4
Repatriation of non-United States earnings			(25.5)	1.3
French CICE
Income Tax [Line Items]
Non-United States tax rate difference:			$ (39.9)	$ (77.1)
Expense recorded prior to the Tax Act
Income Tax [Line Items]
Repatriation of non-United States earnings					$ 83.3

Retirement and Deferred Compensation Plans - Schedule of Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Loss (Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension plans
Net Periodic Benefit Cost
Service cost	$ 15.1	$ 10.9	$ 10.1
Interest cost	12.7	11.6	10.6
Expected return on assets	(12.9)	(10.6)	(10.8)
Settlements	0.4
Net loss	1.2	1.4	0.9
Prior service cost	0.7	0.6	0.4
Net periodic benefit cost	17.2	13.9	11.2
Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income/Loss
Net loss (gain)	45.5	(16.6)	(1.5)
Prior service cost	1.0	1.4	2.9
Amortization of net loss	(1.6)	(1.4)	(0.9)
Amortization of prior service cost	(0.7)	(0.6)	(0.4)
Total recognized in other comprehensive income/loss	44.2	(17.2)	0.1
Total recognized in net periodic benefit cost and other comprehensive income/loss	61.4	(3.3)	11.3
Retiree health care plan
Net Periodic Benefit Cost
Interest cost	0.5	0.5	0.6
Net loss		0.1	0.1
Prior service cost	(0.8)	(0.8)	(0.8)
Net periodic benefit cost	(0.3)	(0.2)	(0.1)
Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income/Loss
Net loss (gain)	0.8	(0.5)	(0.3)
Amortization of net loss		(0.1)	(0.1)
Amortization of prior service cost	0.8	0.8	0.8
Total recognized in other comprehensive income/loss	1.6	$ 0.2	0.4
Total recognized in net periodic benefit cost and other comprehensive income/loss	$ 1.3		$ 0.3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss,Net of Tax (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ 2,761.5	$ 2,698.5	$ 2,857.6	$ 2,446.4
Foreign currency translation
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(260.5)	(223.2)
Translation gain (loss) on derivative instruments, net of income taxes of $(9.1) and $(12.9), respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	13.1	(4.7)
Translation loss on long-term intercompany loans
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(121.5)	(137.2)
Defined benefit pension plans and Retiree health care plan \| Defined benefit pension plans, net of income taxes of $(30.9) and $(23.2), respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(74.1)	(37.9)
Defined benefit pension plans and Retiree health care plan \| Retiree health care plan, net of income taxes of $1.6 and $2.0, respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	2.0	3.2
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ (441.0)	$ (399.8)	$ (288.2)	$ (426.1)

Retirement and Deferred Compensation Plans - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) Insurance_contract	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation plans, asset and liability	$ 106.2	$ 88.5
Company Sponsored Plans
Defined Benefit Plan Disclosure [Line Items]
Total expense	16.9	17.7	$ 17.6
Statutory Plans
Defined Benefit Plan Disclosure [Line Items]
Total expense	32.1	37.4	$ 35.6
Pension plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation for plans that have plan assets	717.2	390.4
Accumulated benefit obligation for plans that do not have plan assets	100.4	$ 86.0
Estimated net loss that will be amortized from AOCI into net periodic benefit cost during next fiscal year	3.1
Estimated prior service cost (credit) that will be amortized from AOCI into net periodic benefit cost during next fiscal year	0.7
Estimated employer contribution to pension plans during next fiscal year	$ 16.0
Pension plans \| Non-United States Plans
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets	2.70%	2.70%	2.80%
Number of foreign plans using guaranteed insurance contracts \| Insurance_contract	4
Net loss recognized in accumulated other comprehensive loss	$ 50.5	$ 16.5
Prior service cost (credit) recognized in accumulated other comprehensive loss	$ 7.8	$ 7.7
Discount rate used in measurement of benefit obligation (as a percent)	1.10%	2.40%
Pension plans \| Non-United States Plans \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets	1.40%
Pension plans \| Non-United States Plans \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets	3.50%
Pension plans \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets	4.30%	4.50%	4.80%
Net loss recognized in accumulated other comprehensive loss	$ 15.8	$ 13.7
Discount rate used in measurement of benefit obligation (as a percent)	2.50%	4.20%
Retiree health care plan
Defined Benefit Plan Disclosure [Line Items]
Estimated net loss that will be amortized from AOCI into net periodic benefit cost during next fiscal year	$ 0.1
Estimated prior service cost (credit) that will be amortized from AOCI into net periodic benefit cost during next fiscal year	0.8
Net loss recognized in accumulated other comprehensive loss	1.5	$ 0.9
Prior service cost (credit) recognized in accumulated other comprehensive loss	$ (3.5)	$ (4.1)
Discount rate used in measurement of benefit obligation (as a percent)	3.00%	4.20%
Discount rate used in measurement of net periodic benefit cost (as a percent)	4.20%	3.20%	4.00%
Health care cost trend rate assumed for next fiscal year (as a percent)	6.80%
Ultimate health care cost trend rate (as a percent)	4.50%

Share-Based Compensation Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 26.3	$ 27.8	$ 28.7
Consideration received from share-based awards	7.0	5.2	44.2
Income tax benefit recognized related to share-based compensation	$ 1.8	$ 4.5	$ 23.7
Number of shares granted	174,000	122,000	145,000
Number of shares outstanding	723,000	672,000	574,000	1,127,000
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance period range	3 years
Stock option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 4.0	$ 4.0	$ 3.7
Share-based payment award vesting period	4 years
Expiration period	10 years
Fair value of options vested	$ 2.3	$ 3.1	$ 2.3
Total unrecognized compensation cost, net of estimated forfeitures	$ 2.0
Total unrecognized compensation cost, weighted-average period for recognition	2 years
Weighted average of daily historical volatility of Company's stock price, weight (as a percent)	75.00%
Period considered to determine expected volatility of stock price	5 years
Implied volatility based on exchange traded options for Company's common stock, weight (as a percent)	25.00%
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 17.78	$ 31.46	$ 25.58
Stock option \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price (as a percent)	100.00%
Stock Appreciation Rights
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted	0	0
Number of shares outstanding	0	0
Deferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 1.4	$ 1.9	$ 1.4
Deferred Stock \| In Lieu of Annual Cash Retainer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in shares)	1,275	5,551	3,647
Deferred Stock \| Additional Compensation for Board Service
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award vesting period	1 year
Expiration period	3 years
Granted (in shares)	18,172	10,152	9,857
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 15.5	$ 13.3	$ 12.3
Total unrecognized compensation cost, net of estimated forfeitures	$ 16.0
Total unrecognized compensation cost, weighted-average period for recognition	2 years
Granted (in shares)	236,000	145,000	167,000
Forfeited (in shares)	36,000	23,000	37,000
Term for restrictions to lapse	6 years
Restricted Stock \| Additional Compensation for Board Service
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in shares)	7,407	6,345	9,792
Forfeited (in shares)	1,666
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 5.2	$ 8.4	$ 10.8

Net Earnings Per Share - Calculations of Net Earnings Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net earnings available to common shareholders	$ 138.8	$ 146.1	$ 127.3	$ 53.5	$ 158.3	$ 158.0	$ 143.4	$ 97.0	$ 465.7	$ 556.7	$ 545.4
Weighted-average common shares outstanding (in millions):
Weighted-average common shares outstanding - basic (in shares)									59.9	64.6	67.1
Weighted-average common shares outstanding - diluted (in shares)									60.3	65.1	67.9
Net earnings per share - basic (in dollars per share)	$ 2.35	$ 2.44	$ 2.12	$ 0.88	$ 2.56	$ 2.45	$ 2.18	$ 1.46	$ 7.78	$ 8.62	$ 8.13
Net earnings per share - diluted (in dollars per share)	$ 2.33	$ 2.42	$ 2.11	$ 0.88	$ 2.54	$ 2.43	$ 2.17	$ 1.45	$ 7.72	$ 8.56	$ 8.04
Effect of dilutive securities - stock options
Weighted-average common shares outstanding (in millions):
Effect of dilutive securities										0.1	0.2
Effect of other share-based awards
Weighted-average common shares outstanding (in millions):
Effect of dilutive securities									0.4	0.4	0.6

Contingencies

12 Months Ended

Dec. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Contingencies

(15) Contingencies

Litigation

In the normal course of business, the Company is named as a defendant in various legal proceedings in which claims are asserted against the Company. We record accruals for loss contingencies based on the circumstances of each claim, when it is probable that a loss has been incurred as of the balance sheet date and can be reasonably estimated. Although the outcome of litigation cannot be predicted with certainty, we believe the ultimate resolution of these legal proceedings will not have a material effect on our business or financial condition.

On April 26, 2017, the sellers of 7S, a company we acquired in 2015, formally disputed the contingent consideration related to the acquisition, claiming an additional $23.7 (€20.8), plus interest. The dispute was submitted to an arbitration tribunal in Germany. On June 28, 2019, the arbitration forum handed down its decision, rejecting the claims brought by the 7S sellers. Finding in favor of ManpowerGroup, the arbitration tribunal confirmed that no further amounts are owed by us, and also awarded us reimbursement of legal fees and other costs.

Guarantees

We have entered into certain guarantee contracts and stand-by letters of credit that total $845.0 as of December 31, 2019 ($793.4 for guarantees and $51.6 for stand-by letters of credit, respectively). The guarantees primarily relate to staffing license requirements, operating leases and indebtedness. The stand-by letters of credit mainly relate to workers’ compensation in the United States. If certain conditions were met under these arrangements, we would be required to satisfy our obligation in cash. Due to the nature of these arrangements and our historical experience, we do not expect to make any significant payments under these arrangements.

Summary of Significant Accounting Policies - Schedule of Changes in Restructuring Reserve (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	$ 15.5	$ 13.5
Severance costs	32.4	31.8
Office closure costs	9.6	7.5
Costs paid, utilized or transferred out	(50.2)	(37.3)
Balance at end of year	7.3	15.5
Reportable segments \| Americas
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0.3	1.7
Severance costs	3.6	0.3
Office closure costs	1.3	0.0
Costs paid, utilized or transferred out	(4.8)	(1.7)
Balance at end of year	0.4	0.3
Reportable segments \| Southern Europe
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	1.7	0.9
Severance costs	5.2	5.4
Office closure costs	0.1	0.0
Costs paid, utilized or transferred out	(6.3)	(4.6)
Balance at end of year	0.7	1.7
Reportable segments \| Northern Europe
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	13.1	9.6
Severance costs	17.6	25.8
Office closure costs	2.0	7.5
Costs paid, utilized or transferred out	(26.5)	(29.8)
Balance at end of year	6.2	13.1
Reportable segments \| APME
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0.0	0.0
Severance costs	3.5	0.0
Office closure costs	0.9	0.0
Costs paid, utilized or transferred out	(4.4)	0.0
Balance at end of year	0.0	0.0
Reportable segments \| Right Management
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0.4	1.2
Severance costs	0.2	0.3
Office closure costs	4.5	0.0
Costs paid, utilized or transferred out	(5.1)	(1.1)
Balance at end of year	0.0	0.4
Corporate
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0.0	0.1
Severance costs	2.3	0.0
Office closure costs	0.8	0.0
Costs paid, utilized or transferred out	(3.1)	(0.1)
Balance at end of year	$ 0.0	$ 0.0

Income Taxes - Deferred Income Taxes Temporary Differences (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Future Income Tax Benefits (Expense)
Accrued payroll taxes and insurance	$ 12.8	$ 13.8
Employee compensation payable	27.2	17.8
Pension and postretirement benefits	62.3	46.9
Intangible assets	(108.7)	(102.1)
Repatriation of non-United States earnings	(8.8)	(15.3)
Loans denominated in foreign currencies	(16.4)	(19.6)
Operating lease ROU assets	(115.8)
Operating lease liabilities	118.1
Net operating losses	89.5	100.5
Other	135.0	97.4
Valuation allowance	(87.8)	(72.4)
Total future tax benefits	107.4	67.0
Deferred tax asset	126.2	99.3
Deferred tax liability	(18.8)	(32.3)
Total future tax benefits	$ 107.4	$ 67.0

Segment Data

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Segment Data

(14) Segment Data

We are organized and managed primarily on a geographic basis, with Right Management currently operating as a separate global business unit. Each country and business unit generally has its own distinct operations and management team, providing services under our global brands, and maintains its own financial reports. We have an executive sponsor for each global brand who is responsible for ensuring the integrity and consistency of delivery locally. We develop and implement global workforce solutions for our clients that deliver the outcomes that help them achieve their business strategy. Each operation reports directly or indirectly through a regional manager to a member of executive management. Given this reporting structure, we operate using the following reporting segments: Americas, which includes United States and Other Americas; Southern Europe, which includes France, Italy and Other Southern Europe; Northern Europe; APME; and Right Management.

The Americas, Southern Europe, Northern Europe and APME segments derive a significant majority of their revenues from the placement of contingent workers. The remaining revenues within these segments are derived from other workforce solutions and services, including ManpowerGroup Solutions (RPO, MSP, Proservia and Talent Based Outsourcing (TBO)), recruitment and assessment, and training and development. The Right Management segment revenues are derived from career management and talent management services. Segment revenues represent sales to external clients. We provide services to a wide variety of clients, none of which individually comprise a significant portion of revenues for us as a whole. Due to the nature of our business, we generally do not have export sales.

The accounting policies of the segments are the same as those described in the summary of significant accounting policies. We evaluate performance based on operating unit profit, which is equal to segment revenues less direct costs and branch and national headquarters operating costs. This profit measure does not include goodwill and intangible asset impairment charges or amortization of intangible assets related to acquisitions, corporate expenses, interest and other income and expense amounts or income taxes.

Total assets for the segments are reported after the elimination of investments in subsidiaries and intercompany accounts.

Year Ended December 31	2019			2018			2017
Revenues from Services^(a)
Americas:
United States^(b)	$	2,507.0		$	2,522.3		$	2,659.0
Other Americas		1,675.3			1,637.0			1,557.4
		4,182.3			4,159.3			4,216.4
Southern Europe:
France		5,459.7			5,827.7			5,477.2
Italy		1,506.5			1,670.6			1,475.9
Other Southern Europe		2,200.2			1,873.3			1,703.9
		9,166.4			9,371.6			8,657.0
Northern Europe		4,691.3			5,370.5			5,306.4
APME		2,627.2			2,890.3			2,636.4
Right Management		196.3			199.5			218.1
	$	20,863.5		$	21,991.2		$	21,034.3
Operating Unit Profit
Americas:
United States	$	113.2		$	130.8		$	152.1
Other Americas		73.1			73.1			61.2
		186.3			203.9			213.3
Southern Europe:
France		284.3			290.4			280.0
Italy		102.6			111.1			104.5
Other Southern Europe		67.7			66.1			59.4
		454.6			467.6			443.9
Northern Europe		67.1			122.7			140.1
APME		122.6			114.8			98.9
Right Management		30.0			32.8			36.0
	$	860.6		$	941.8		$	932.2
Corporate expenses		(121.9	)		(110.0	)		(108.4	)
Goodwill impairment charge		(64.0	)		—			—
Intangible asset amortization expense^(c)		(29.8	)		(35.1	)		(34.6	)
Interest and other income (expenses), net		40.6			(42.0	)		(51.9	)
Earnings before income taxes	$	685.5		$	754.7		$	737.3

(a) Further breakdown of revenues from services by geographical region was as follows:

Revenues from Services	2019		2018		2017
United States	$	2,590.6	$	2,608.9	$	2,758.5
France		5,479.6		5,846.4		5,493.9
Italy		1,508.3		1,673.9		1,479.4
United Kingdom		1,598.6		1,672.1		1,619.2
Total Foreign		18,272.9		19,382.3		18,275.8

(b) The United States revenues above represent revenues from our company-owned branches and franchise fees received from our franchise operations, which were $14.1, $15.0 and $14.8 for 2019, 2018 and 2017, respectively.

(c) Intangible asset amortization related to acquisitions is excluded from operating costs within the reportable segments and corporate expenses, and shown separately.

Year Ended December 31	2019			2018			2017
Depreciation and Amortization Expense
Americas:
United States	$	8.0		$	8.2		$	9.3
Other Americas		2.3			2.2			2.5
		10.3			10.4			11.8
Southern Europe:
France		13.7			14.0			12.3
Italy		1.8			1.9			1.8
Other Southern Europe		4.9			4.8			4.7
		20.4			20.7			18.8
Northern Europe		9.5			11.0			10.6
APME		5.6			5.7			4.7
Right Management		1.5			2.8			3.7
Corporate expenses		0.1			0.1			0.2
Intangible asset amortization expense^(a)		29.8			35.1			34.6
	$	77.2		$	85.8		$	84.4
Earnings from Equity Investments
Americas:
United States	$	—		$	—		$	—
Other Americas		—			—			—
		—			—			—
Southern Europe:
France		—			—			—
Italy		(0.1	)		(0.2	)		—
Other Southern Europe		47.5			1.7			15.0
		47.4			1.5			15.0
Northern Europe		—			—			—
APME		3.1			(0.3	)		—
Right Management		—			—			—
	$	50.5		$	1.2		$	15.0

(a) Intangible asset amortization related to acquisitions is excluded from operating costs within the reportable segments and corporate expenses, and shown separately.

As of December 31	2019		2018		2017
Total Assets
Americas:
United States	$	2,107.8	$	1,827.4	$	1,781.4
Other Americas		379.2		341.5		329.2
		2,487.0		2,168.9		2,110.6
Southern Europe:
France		2,722.7		2,729.7		2,753.1
Italy		463.4		405.0		436.7
Other Southern Europe		771.0		576.7		596.2
		3,957.1		3,711.4		3,786.0
Northern Europe		1,470.6		1,237.0		1,569.0
APME		707.6		754.0		780.7
Right Management		112.1		127.6		138.1
Corporate^(a)		489.4		520.9		499.2
	$	9,223.8	$	8,519.8	$	8,883.6
Equity Investments
Americas:
United States	$	—	$	—	$	—
Other Americas		—		—		—
		—		—		—
Southern Europe:
France		—		—		—
Italy		0.3		0.3		0.4
Other Southern Europe		—		157.8		157.2
		0.3		158.1		157.6
Northern Europe		—		—		—
APME		—		2.3		0.1
Right Management		—		—		—
Corporate		97.5		1.0		1.0
	$	97.8	$	161.4	$	158.7

(a) Corporate assets include assets that were not used in the operations of any segment, the most significant of which were purchased intangibles and cash.

As of and Year Ended December 31	2019		2018		2017
Long-lived Assets^(a)
Americas:
United States	$	20.0	$	19.6	$	20.6
Other Americas		8.0		6.0		6.1
		28.0		25.6		26.7
Southern Europe:
France		46.3		49.2		47.9
Italy		5.2		5.0		4.9
Other Southern Europe		23.5		23.4		24.3
		75.0		77.6		77.1
Northern Europe		27.1		29.9		28.0
APME		18.4		21.5		21.4
Right Management		2.2		5.3		8.0
Corporate		0.2		0.1		0.1
	$	150.9	$	160.0	$	161.3
Additions to Long-Lived Assets
Americas:
United States	$	8.1	$	7.6	$	6.7
Other Americas		4.5		2.8		2.4
		12.6		10.4		9.1
Southern Europe:
France		12.8		18.1		15.2
Italy		2.1		2.2		1.7
Other Southern Europe		4.9		5.9		8.8
		19.8		26.2		25.7
Northern Europe		7.6		16.6		11.8
APME		8.0		6.8		6.3
Right Management		0.6		0.2		1.0
Corporate		0.1		0.1		—
	$	48.7	$	60.3	$	53.9

(a) Further breakdown of long-lived assets by geographical region was as follows:

Long-Lived Assets	2019		2018		2017
United States	$	20.5	$	22.4	$	24.9
France		46.9		50.1		49.1
Italy		5.2		5.0		4.9
United Kingdom		5.8		7.0		9.1
Total Foreign		130.4		137.6		136.4

Summary of Significant Accounting Policies - Summary of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 605.5	$ 613.6
Land
Property, Plant and Equipment [Line Items]
Property and equipment	0.5	3.4
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment	10.2	12.0
Furniture, Fixtures, and Autos
Property, Plant and Equipment [Line Items]
Property and equipment	164.8	167.3
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment	130.3	128.7
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 299.7	$ 302.2

Share-Based Compensation Plans - Schedule of Options Outstanding and Exercisable (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Stock option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, shares (in shares) \| shares	723
Options outstanding, weighted-average remaining contractual life	6 years 1 month 6 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 87
Options exercisable, shares (in shares) \| shares	426
Options exercisable, weighted-average exercise price (in dollars per share)	$ 82
$44-$59
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price range, lower range limit (in dollars per share)	44
Exercise price range, upper range limit (in dollars per share)	$ 59
$44-$59 \| Stock option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, shares (in shares) \| shares	66
Options outstanding, weighted-average remaining contractual life	2 years 1 month 6 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 51
Options exercisable, shares (in shares) \| shares	66
Options exercisable, weighted-average exercise price (in dollars per share)	$ 51
$60-$79
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price range, lower range limit (in dollars per share)	60
Exercise price range, upper range limit (in dollars per share)	$ 79
$60-$79 \| Stock option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, shares (in shares) \| shares	225
Options outstanding, weighted-average remaining contractual life	5 years 3 months 18 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 76
Options exercisable, shares (in shares) \| shares	196
Options exercisable, weighted-average exercise price (in dollars per share)	$ 76
$80-$99
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price range, lower range limit (in dollars per share)	80
Exercise price range, upper range limit (in dollars per share)	$ 99
$80-$99 \| Stock option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, shares (in shares) \| shares	319
Options outstanding, weighted-average remaining contractual life	7 years 2 months 12 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 89
Options exercisable, shares (in shares) \| shares	115
Options exercisable, weighted-average exercise price (in dollars per share)	$ 93
$100-$123
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price range, lower range limit (in dollars per share)	100
Exercise price range, upper range limit (in dollars per share)	$ 123
$100-$123 \| Stock option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, shares (in shares) \| shares	113
Options outstanding, weighted-average remaining contractual life	6 years 7 months 6 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 123
Options exercisable, shares (in shares) \| shares	49
Options exercisable, weighted-average exercise price (in dollars per share)	$ 123

Derivative Financial Instruments - Effect of Net Investment Hedges on AOCI (Details) - Net Investment Hedging - Designated as economic hedges - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Euro-denominated notes
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 22.9	$ 45.4
Cross-currency swap
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(9.0)
Cross-currency swap \| Interest and Other (Income) Expenses, Net
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI into Income	$ 8.7

Share-Based Compensation Plans - Assumptions Used to Estimate Fair Value of Share Awards (Details) - Stock option	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Average risk-free interest rate (as a percent)	2.50%	2.60%	2.00%
Expected dividend yield (as a percent)	2.90%	1.60%	2.00%
Expected volatility (as a percent)	27.00%	27.00%	31.00%
Expected term (years)	6 years	6 years	6 years

Summary of Significant Accounting Policies - Schedule of Assets and Liabilities Measured and Recorded at Fair Value On Recurring Basis (Details) - Fair value measured on a recurring basis - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets
Deferred compensation plan assets	$ 107.3	$ 89.5
Cross-currency swaps	9.7	0.0
Foreign currency forward contracts	0.0	0.1
Total assets measured at fair value	117.0	89.6
Liabilities
Cross-currency swaps	6.0	0.0
Foreign currency forward contracts	0.0	0.1
Total liabilities measured at fair value	6.0	0.1
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Deferred compensation plan assets	107.3	89.5
Cross-currency swaps	0.0	0.0
Foreign currency forward contracts	0.0	0.0
Total assets measured at fair value	107.3	89.5
Liabilities
Cross-currency swaps	0.0	0.0
Foreign currency forward contracts	0.0	0.0
Total liabilities measured at fair value	0.0	0.0
Significant Other Observable Inputs (Level 2)
Assets
Deferred compensation plan assets	0.0	0.0
Cross-currency swaps	9.7	0.0
Foreign currency forward contracts	0.0	0.1
Total assets measured at fair value	9.7	0.1
Liabilities
Cross-currency swaps	6.0	0.0
Foreign currency forward contracts	0.0	0.1
Total liabilities measured at fair value	6.0	0.1
Significant Unobservable Inputs (Level 3)
Assets
Deferred compensation plan assets	0.0	0.0
Cross-currency swaps	0.0	0.0
Foreign currency forward contracts	0.0	0.0
Total assets measured at fair value	0.0	0.0
Liabilities
Cross-currency swaps	0.0	0.0
Foreign currency forward contracts	0.0	0.0
Total liabilities measured at fair value	$ 0.0	$ 0.0

Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
Federal	$ 16.7	$ 17.2	$ 211.7
State	2.5	10.8	8.4
Non-United States	243.6	181.9	168.6
Total current	262.8	209.9	388.7
Deferred
Federal	(22.1)	(7.5)	(178.2)
State	1.1	1.0	(0.8)
Non-United States	(22.0)	(5.4)	(17.8)
Total deferred	(43.0)	(11.9)	(196.8)
Total provision	$ 219.8	$ 198.0	$ 191.9

Goodwill - Changes in Carrying Value of Goodwill by Reportable Segment (Details) - USD ($)	3 Months Ended			12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Balance at beginning of period				$ 1,297,100,000	$ 1,343,000,000.0
Goodwill acquired during the period				48,000,000.0	6,100,000
Goodwill allocated to business units sold/deconsolidated				(20,100,000)	(8,800,000)
Impairment charge	$ 0	$ 0	$ 0	(64,000,000.0)
Currency impact and other				(900,000)	(43,200,000)
Balance at end of period				1,260,100,000	1,297,100,000
Reportable segments \| Americas
Goodwill [Roll Forward]
Balance at beginning of period				519,900,000	519,200,000
Goodwill acquired during the period				14,200,000	4,600,000
Currency impact and other				1,500,000	(3,900,000)
Balance at end of period				535,600,000	519,900,000
Reportable segments \| Southern Europe
Goodwill [Roll Forward]
Balance at beginning of period				112,200,000	121,900,000
Goodwill acquired during the period				33,800,000
Currency impact and other				(1,200,000)	(9,700,000)
Balance at end of period				144,800,000	112,200,000
Reportable segments \| Northern Europe
Goodwill [Roll Forward]
Balance at beginning of period				435,400,000	468,100,000
Goodwill allocated to business units sold/deconsolidated					(8,800,000)
Impairment charge				(60,200,000)
Currency impact and other				(600,000)	(23,900,000)
Balance at end of period				374,600,000	435,400,000
Reportable segments \| APME
Goodwill [Roll Forward]
Balance at beginning of period				102,000,000.0	106,200,000
Goodwill acquired during the period					1,500,000
Goodwill allocated to business units sold/deconsolidated				(18,500,000)
Impairment charge				(3,800,000)
Currency impact and other				(600,000)	(5,700,000)
Balance at end of period				79,100,000	102,000,000.0
Reportable segments \| Right Management
Goodwill [Roll Forward]
Balance at beginning of period				62,100,000	62,100,000
Balance at end of period				62,100,000	62,100,000
Corporate
Goodwill [Roll Forward]
Balance at beginning of period				65,500,000	65,500,000
Goodwill allocated to business units sold/deconsolidated				(1,600,000)
Balance at end of period				$ 63,900,000	$ 65,500,000

Leases - Maturities of Operating Leases Accounted for Under ASC 840 (Details) $ in Millions	Dec. 31, 2018 USD ($)
Period Ending December 31, 2018
2019	$ 151.4
2020	115.2
2021	85.5
2022	65.0
2023	44.1
Thereafter	105.6
Total minimum lease payments	$ 566.8

Retirement and Deferred Compensation Plans

12 Months Ended

Dec. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Retirement and Deferred Compensation Plans

(9) Retirement and Deferred Compensation Plans

For all of our United States defined benefit and retiree health care plans, we adopted the Society of Actuaries’ Pri-2012 Mortality Table with MP-2019 Mortality Improvement Scale in determining the plans’ benefit obligations as of December 31, 2019.

Defined Benefit Pension Plans

We sponsor several qualified and nonqualified pension plans covering permanent employees. In 2019, a new pension plan was added as a result of our acquisition of the remaining controlling interest in Manpower Switzerland. (See Note 4 to the Consolidated Financial Statements for further information.)

The reconciliation of the changes in the plans’ benefit obligations and the fair value of plan assets and the funded status of the plans are as follows:

	United States Plans						Non-United States Plans
Year Ended December 31	2019			2018			2019			2018
Change in Benefit Obligation
Benefit obligation, beginning of year	$	48.9		$	53.7		$	450.0		$	489.5
Service cost		—			—			15.1			10.9
Interest cost		1.8			1.6			10.9			10.0
Acquisitions		—			—			201.2			—
Settlements		—			—			(40.9	)		—
Transfers		—			—			52.7			1.2
Actuarial loss (gain)		6.3			(2.0	)		100.1			(28.0	)
Plan participant contributions		—			—			9.0			0.2
Benefits paid		(4.2	)		(4.4	)		(11.3	)		(10.5	)
Currency exchange rate changes		—			—			8.0			(23.3	)
Benefit obligation, end of year	$	52.8		$	48.9		$	794.8		$	450.0

	United States Plans						Non-United States Plans
Year Ended December 31	2019			2018			2019			2018
Change in Plan Assets
Fair value of plan assets, beginning of year	$	36.1		$	38.7		$	354.1		$	376.7
Actual return on plan assets		4.4			(0.7	)		69.5			(2.4	)
Acquisitions		—			—			196.8			—
Settlements		—			—			(40.9	)		—
Transfers		—			—			51.6			(0.3	)
Plan participant contributions		—			—			9.0			0.2
Company contributions		2.5			2.5			15.4			9.2
Benefits paid		(4.2	)		(4.4	)		(11.3	)		(10.5	)
Currency exchange rate changes		—			—			11.2			(18.8	)
Fair value of plan assets, end of year	$	38.8		$	36.1		$	655.4		$	354.1
Funded Status at End of Year
Funded status, end of year	$	(14.0	)	$	(12.8	)	$	(139.4	)	$	(95.9	)
Amounts Recognized
Noncurrent assets	$	15.0		$	15.0		$	41.4		$	46.9
Current liabilities		(2.5	)		(2.5	)		(0.7	)		(0.5	)
Noncurrent liabilities		(26.5	)		(25.3	)		(180.1	)		(142.3	)
Net amount recognized	$	(14.0	)	$	(12.8	)	$	(139.4	)	$	(95.9	)

Amounts recognized in accumulated other comprehensive loss, net of tax, consisted of:

	United States Plans				Non-United States Plans
Year Ended December 31	2019		2018		2019		2018
Net loss	$	15.8	$	13.7	$	50.5	$	16.5
Prior service cost		—		—		7.8		7.7
Total	$	15.8	$	13.7	$	58.3	$	24.2

The accumulated benefit obligation for our plans that have plan assets was $717.2 and $390.4 as of December 31, 2019 and 2018, respectively. The accumulated benefit obligation for some of our plans exceeded the fair value of plan assets as follows:

December 31	2019		2018
Accumulated benefit obligation	$	163.8	$	129.4
Plan assets		80.4		67.0

The projected benefit obligation for some of our plans exceeded the fair value of plan assets as follows:

December 31	2019		2018
Projected benefit obligation	$	414.6	$	135.8
Plan assets		324.3		67.0

The Swiss plan that we acquired during 2019 was underfunded, resulting in the significant increase in the amounts above.

By their nature, certain of our plans do not have plan assets. The accumulated benefit obligation for these plans was $100.4 and $86.0 as of December 31, 2019 and 2018, respectively.

The components of the net periodic benefit cost and other amounts recognized in other comprehensive loss for all plans were as follows:

Year Ended December 31	2019			2018			2017
Net Periodic Benefit Cost
Service cost	$	15.1		$	10.9		$	10.1
Interest cost		12.7			11.6			10.6
Expected return on assets		(12.9	)		(10.6	)		(10.8	)
Settlements		0.4			—			—
Net loss		1.2			1.4			0.9
Prior service cost		0.7			0.6			0.4
Net periodic benefit cost		17.2			13.9			11.2
Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income/Loss
Net loss (gain)		45.5			(16.6	)		(1.5	)
Prior service cost		1.0			1.4			2.9
Amortization of net loss		(1.6	)		(1.4	)		(0.9	)
Amortization of prior service cost		(0.7	)		(0.6	)		(0.4	)
Total recognized in other comprehensive income/loss		44.2			(17.2	)		0.1
Total recognized in net periodic benefit cost and other comprehensive income/loss	$	61.4		$	(3.3	)	$	11.3

The estimated net loss and prior service cost for the defined benefit pension plans that will be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2020 are $3.1 and $0.7, respectively.

The weighted-average assumptions used in the measurement of the benefit obligation were as follows:

	United States Plans						Non-United States Plans
Year Ended December 31	2019			2018			2019			2018
Discount rate		2.5	%		4.2	%		1.1	%		2.4	%
Rate of compensation increase		3.0	%		3.0	%		1.7	%		1.8	%

The weighted-average assumptions used in the measurement of the net periodic benefit cost were as follows:

	United States Plans									Non-United States Plans
Year Ended December 31	2019			2018			2017			2019			2018			2017
Discount rate - service cost		4.2	%		3.6	%		4.1	%		1.8	%		2.1	%		2.2	%
Discount rate - interest cost		4.2	%		3.2	%		3.3	%		1.8	%		2.1	%		2.2	%
Expected long-term return on plan assets		4.3	%		4.5	%		4.8	%		2.7	%		2.7	%		2.8	%
Rate of compensation increase		3.0	%		3.0	%		3.0	%		1.7	%		1.8	%		1.7	%

We determine our assumption for the discount rate based on an index of high-quality corporate bond yields and matched-funding yield curve analysis as of the end of each fiscal year.

Our overall expected long-term rate of return used in the measurement of the 2019 net periodic benefit cost on United States plan assets was 4.3%, while the rates of return on our non-United States plans varied by country and ranged from 1.4% to 3.5%. For a majority of our plans, a building block approach has been employed to establish this return. Historical markets are studied and long-term historical relationships between equity securities and fixed income instruments are preserved consistent with the widely accepted capital market principle that assets with higher volatility generate a greater return over time. Current market factors such as inflation and interest rates are evaluated before long-term capital market assumptions are determined. The long-term portfolio return is established with proper consideration of diversification and rebalancing. We also use guaranteed insurance contracts for four of our foreign plans. Peer data and historical returns are reviewed to check for reasonableness and appropriateness of our expected rate of return.

Projected salary levels utilized in the determination of the projected benefit obligation for the pension plans are based upon historical experience and the future expectations for each respective country.

Our plans’ investment policies are to optimize the long-term return on plan assets at an acceptable level of risk and to maintain careful control of the risk level within each asset class. Our long-term objective is to minimize plan expenses and contributions by outperforming plan liabilities. We have historically used a balanced portfolio strategy based primarily on a target allocation of equity securities and fixed-income instruments, which vary by location. These target allocations, which are similar to the 2019 allocations, are determined based on the favorable risk tolerance characteristics of the plan and, at times, may be adjusted within a specified range to advance our overall objective.

The fair values of our Level 1 and Leve 2 pension plan assets are primarily determined by using market quotes and other relevant information that is generated by market transactions involving identical or comparable assets. Insurance contracts and annuity contracts are measured at the present value of expected future benefit payments primarily using associated interest curves. Hedge funds consist of a number of diversified funds including those investing in international securities, equity and private partnership interests valued using market available data and various models and assumptions.

The fair value of our pension plan assets by asset category was as follows:

	United States Plans								Non-United States Plans
	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset Category
Cash and cash equivalents⁽¹⁾	$	5.8	$	—	$	5.8	$	—	$	5.5	$	5.5	$	—	$	—
Equity securities:
Mutual funds		7.8		7.8		—		—		98.0		98.0		—		—
Common stock		—		—		—		—		22.3		22.3		—		—
Fixed income instruments:
Fixed income funds		25.2		—		25.2		—		160.0		—		160.0		—
Annuity contract		—		—		—		—		52.5		—		—		52.5
Bonds		—		—		—		—		37.0		—		37.0		—
Guaranteed insurance contracts		—		—		—		—		18.5		—		18.5		—
Other types of investments:
Insurance contracts		—		—		—		—		130.6		—		—		130.6
Real estate funds		—		—		—		—		93.3		—		87.3		6.0
Hedge funds		—		—		—		—		29.3		—		9.6		19.7
Other		—		—		—		—		8.4		—		2.4		6.0
	$	38.8	$	7.8	$	31.0	$	—	$	655.4	$	125.8	$	314.8	$	214.8

(1) This category includes a prime obligations money market portfolio.

	United States Plans								Non-United States Plans
	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset Category
Cash and cash equivalents⁽¹⁾	$	5.1	$	—	$	5.1	$	—	$	35.5	$	35.5	$	—	$	—
Equity securities:
Mutual funds		6.3		6.3		—		—		30.5		30.5		—		—
Fixed income instruments:
Fixed income funds		24.7		—		24.7		—		99.4		—		99.4		—
Annuity contract		—		—		—		—		46.2		—		—		46.2
Guaranteed insurance contracts		—		—		—		—		17.7		—		17.7		—
Bank loans		—		—		—		—		8.9		—		8.9		—
Other types of investments:
Insurance contracts		—		—		—		—		107.7		—		—		107.7
Real estate funds		—		—		—		—		8.2		—		8.2		—
	$	36.1	$	6.3	$	29.8	$	—	$	354.1	$	66.0	$	134.2	$	153.9

(1) This category includes a prime obligations money market portfolio.

Certain asset categories in the prior year have been reclassified in order to consolidate for presentation purposes and to conform to current year presentation.

The following table summarizes the changes in fair value of the pension assets that are measured using Level 3 inputs. We determined that transfers between fair-value-measurement levels occurred on the date of the event that caused the transfer.

Year Ended December 31	2019		2018
Balance, beginning of year	$	153.9	$	108.8
Actual return on plan assets		30.5		4.2
Acquisitions		27.6		—
Transfers		—		46.2
Purchases, sales and settlements, net		2.5		(0.3	)
Currency exchange rate changes		0.3		(5.0	)
Balance, end of year	$	214.8	$	153.9

Retiree Health Care Plan

We provide medical and dental benefits to certain eligible retired employees in the United States. Due to the nature of the plan, there are no plan assets. The reconciliation of the changes in the plan’s benefit obligation and the statement of the funded status of the plan were as follows:

Year Ended December 31	2019			2018
Change in Benefit Obligation
Benefit obligation, beginning of year	$	13.7		$	14.9
Interest cost		0.5			0.5
Actuarial loss (gain)		0.8			(0.5	)
Benefits paid		(0.9	)		(1.2	)
Benefit obligation, end of year	$	14.1		$	13.7
Funded Status at End of Year
Funded status, end of year	$	(14.1	)	$	(13.7	)
Amounts Recognized
Current liabilities	$	(1.1	)	$	(1.1	)
Noncurrent liabilities		(13.0	)		(12.6	)
Net amount recognized	$	(14.1	)	$	(13.7	)

The amount recognized in accumulated other comprehensive loss, net of tax, consists of a net loss of $1.5 and $0.9 as of December 31, 2019 and 2018, respectively, and a prior service credit of $3.5 and $4.1 as of December 31, 2019 and 2018, respectively.

The discount rate used in the measurement of the benefit obligation was 3.0% and 4.2% in 2019 and 2018, respectively. The discount rate used in the measurement of net periodic benefit cost was 4.2%, 3.2% and 4.0% in 2019, 2018, and 2017, respectively.

The components of net periodic benefit cost and other amounts recognized in other comprehensive loss for this plan were as follows:

Year Ended December 31	2019			2018			2017
Net Periodic Benefit Credit
Interest cost	$	0.5		$	0.5		$	0.6
Net loss		—			0.1			0.1
Prior service credit		(0.8	)		(0.8	)		(0.8	)
Net periodic benefit credit	$	(0.3	)	$	(0.2	)	$	(0.1	)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income/Loss
Net loss (gain)	$	0.8		$	(0.5	)	$	(0.3	)
Amortization of net loss		—			(0.1	)		(0.1	)
Amortization of prior service credit		0.8			0.8			0.8
Total recognized in other comprehensive income/loss		1.6			0.2			0.4
Total recognized in net periodic benefit cost and other comprehensive income/loss	$	1.3		$	—		$	0.3

The estimated net loss and prior service credit for the retiree health care plan that will be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2020 are $0.1 and $0.8, respectively.

The health care cost trend rate is assumed to be 6.8% for 2020, decreasing gradually to an ultimate rate of 4.5% in 2027. Assumed health care cost trend rates are not expected to have a material effect on the amounts reported.

Future Contributions and Payments

During 2020, we plan to contribute approximately $16.0 to our pension plans and to fund our retiree health care payments as incurred. Projected benefit payments from the plans as of December 31, 2019 were estimated as follows:

Year	Pension Plans		Retiree Health Care Plan
2020	$	86.0	$	1.1
2021		35.3		1.1
2022		25.6		1.1
2023		23.2		1.1
2024		25.3		1.0
2025–2029		142.0		4.7
Total projected benefit payments	$	337.4	$	10.1

Defined Contribution Plans and Deferred Compensation Plans

We have defined contribution plans covering substantially all permanent United States employees and various other employees throughout the world. With our company-sponsored plans, employees may elect to contribute a portion of their salary to the plans and we match a portion of their contributions up to a maximum percentage of the employee’s salary. In addition, profit sharing contributions are made if a targeted earnings level is reached at management’s discretion. The total expense for our match and any profit sharing contributions was $16.9, $17.7 and $17.6 for the years ended December 31, 2019, 2018 and 2017, respectively. In certain countries with statutory defined contribution plans, we pay a percentage of the employees' salary in pension premiums. The total expense for the statutory defined contribution plans was $32.1, $37.4 and $35.6 for the years ended December 31, 2019, 2018 and 2017, respectively.

We also have deferred compensation plans in the United States. One of the plans had an asset and liability of $106.2 and $88.5 as of December 31, 2019 and 2018, respectively, with the remaining plans holding immaterial amounts of assets and liabilities.

Retirement and Deferred Compensation Plans - Schedule of Plans with Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Details) - Pension plans - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 163.8	$ 129.4
Plan assets	$ 80.4	$ 67.0

Contingencies - Additional Information (Details) € in Millions, $ in Millions	Apr. 26, 2017 USD ($)	Apr. 26, 2017 EUR (€)	Dec. 31, 2019 USD ($)
Loss Contingencies [Line Items]
Loss contingency			$ 845.0
Guarantees
Loss Contingencies [Line Items]
Loss contingency			793.4
Stand-by letters of credit
Loss Contingencies [Line Items]
Loss contingency			$ 51.6
7S
Loss Contingencies [Line Items]
Additional consideration sought from the seller of 7S	$ 23.7	€ 20.8

Summary of Significant Accounting Policies - Schedule of Goodwill, Finite-Lived Intangible Assets and Indefinite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 1,260.1	$ 1,297.1	$ 1,343.0
Finite-lived:
Gross	481.4	463.3
Accumulated Amortization	389.4	367.7
Net	92.0	95.6
Indefinite-lived:
Gross	176.6	150.7
Total intangible assets
Gross	658.0	614.0
Accumulated Amortization	389.4	367.7
Net	268.6	246.3
Tradenames
Indefinite-lived:
Gross	52.0	52.0
Reacquired franchise rights
Indefinite-lived:
Gross	124.6	98.7
Customer relationships
Finite-lived:
Gross	460.5	444.8
Accumulated Amortization	375.7	351.7
Net	84.8	93.1
Other
Finite-lived:
Gross	20.9	18.5
Accumulated Amortization	13.7	16.0
Net	$ 7.2	$ 2.5

Derivative Financial Instruments - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Sep. 30, 2019 EUR (€)	Apr. 30, 2019 EUR (€)	Jun. 22, 2018 EUR (€)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Pre-tax derivative gains and losses included in AOCI to be reclassified into earnings over the next twelve months \| $	$ 10.0
Cross-currency swap \| Cash flow hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt			€ 55,400,000	€ 202,300,000
Interest rate (as a percent)			1.143%	1.256%
Notes due September 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		€ 400,000,000.0
Interest rate (as a percent)	1.875%	1.875%
Notes Due June 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		€ 500,000,000.0			€ 500,000,000.0
Interest rate (as a percent)					1.75%
Designated as hedging instrument \| Notes due September 2022 \| Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 447.1	400,000,000.0
Designated as hedging instrument \| Notes Due June 2026 \| Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 555.8	€ 500,000,000.0

Acquisitions and Dispositions

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Acquisitions and Dispositions

(4) Acquisitions and Dispositions

Switzerland Acquisitions

On April 3, 2019, we acquired the remaining 51% controlling interest in our Swiss franchise (“Manpower Switzerland”) to obtain full ownership of the entity. Additionally, as part of the purchase agreement we acquired the remaining 20% interest in Experis AG. Manpower Switzerland provides contingent staffing services under our Manpower brand in the four main language regions in Switzerland. Both Manpower Switzerland and Experis AG are reported in our Southern Europe segment. The aggregate cash consideration paid was $219.5 and was funded through cash on hand. Of the total consideration paid, $58.3 was for the acquired interests and the remaining $161.2 was for cash and cash equivalents. The acquisition of the remaining interest of Experis AG was accounted for as an equity transaction as we previously consolidated the entity.

Our investment in Manpower Switzerland prior to the acquisition was accounted for under the equity method of accounting and we recorded our share of equity income or loss in interest and other (income) expenses, net on the Consolidated Statements of Operations. The acquisition of the remaining controlling interest in Manpower Switzerland was accounted for as a business combination, and the assets and liabilities of Manpower Switzerland were included in the Consolidated Balance Sheets as of the acquisition date and the results of its operations have been included in the Consolidated Statements of Operations subsequent to the acquisition date.

The aggregate of the consideration paid and the fair value of previously held equity interest totaled $415.1, or $97.6 net of cash acquired. In connection with the business combination, we recognized a one-time, non-cash gain on the disposition of our previously held equity interest in Manpower Switzerland of $80.4, which is included within interest and other (income) expenses, net on the Consolidated Statements of Operations. Of the $80.4, $32.5 represented foreign currency translation adjustments related to the previously held equity interest from accumulated other comprehensive income.

The following table summarizes the fair value of the assets and liabilities as of the acquisition date of April 3, 2019:


Cash and cash equivalents	$	317.5
Accounts receivable		60.4
Prepaid expenses and other assets		31.4
Goodwill		33.8
Intangible assets subject to amortization, customer relationship		19.6
Intangible assets not subject to amortization, reacquired franchise rights		25.5
Property and equipment		0.4
Accounts payable		(21.6	)
Employee compensation payable		(2.5	)
Accrued liabilities		(9.9	)
Accrued payroll taxes and insurance		(7.5	)
Value added taxes payable		(7.4	)
Other long-term liabilities		(24.6	)
Total assets and liabilities	$	415.1

The customer relationship intangible asset will be amortized over a 15 year useful life. The goodwill from the acquisition is not expected to be deductible for income tax purposes. As of December 31, 2019, the carrying value of intangible assets and goodwill was $44.5 and $34.2, respectively.

Manpower Switzerland contributed revenues from services of $337.7 since the acquisition. Our consolidated unaudited proforma historical revenues from services, as if Manpower Switzerland had been acquired at the beginning of 2018, are estimated as follows:

	Year Ended December 31,
	2019		2018
Revenues from services	$	20,957.9	$	22,452.6

Other Acquisitions

From time to time, we acquire and invest in companies throughout the world, including franchises. The total cash consideration paid for acquisitions excluding Manpower Switzerland and Experis AG, net of cash acquired, for the years ended December 31, 2019, 2018 and 2017 was $47.7, $51.8 and $45.7, respectively. The 2019 balance includes consideration payments for franchises in the United States and contingent consideration payments related to previous acquisitions, of which $13.0 had been recognized as a liability at the acquisition date. The 2018 balance includes initial acquisition payments of $9.1 and contingent consideration payments of $42.7, of which $18.6 had been recognized as a liability at the acquisition date. The 2017 balance includes initial acquisition payments of $32.7 and contingent consideration related to previous acquisitions of $13.0, of which $10.3 was related to our 2015 acquisition of 7S Group GmbH ("7S") in Germany.

As of December 31, 2019, goodwill and intangible assets resulting from the 2019 acquisitions, excluding Manpower Switzerland, were $14.2 and $9.0, respectively. As of December 31, 2018, goodwill and intangible assets resulting from the 2018 acquisitions were $6.1 and $0.7, respectively.

ManpowerGroup Greater China Limited Disposition

On July 10, 2019, our joint venture in Greater China, ManpowerGroup Greater China Limited, became listed on the Main Board of the Stock Exchange of Hong Kong Limited through an initial public offering. Prior to the initial public offering, we owned a 51% controlling interest in the joint venture and consolidated the financial position and results of its operations into our Consolidated Financial Statements as part of our APME segment. As a result of the offering, in which ManpowerGroup Greater China Limited issued new shares representing 25% of the equity of the company, our ownership interest was diluted to 38.25%, and then further diluted to 36.87% as the underwriters exercised their overallotment option in full on August 7, 2019. As a result, we deconsolidated the joint venture as of the listing date and account for our remaining interest under the equity method of accounting and record our share of equity income or loss in interest and other expenses (income), net in the Consolidated Statement of Operations. In connection with the deconsolidation of the joint venture, we recognized a one-time non-cash gain of $30.4, which was included in selling and administrative expenses in the Consolidated Statement of Operations in the year ended December 31, 2019. Included in the $30.4 was foreign currency translation adjustment losses of $6.2 related to the joint venture from accumulated other comprehensive income.

Other Dispositions

Occasionally, we dispose of parts of our operations in order to optimize our global strategic and geographic footprint and synergies. In December 2018, we sold one of our business units in the Netherlands for an after tax net gain of $3.8 and divested a majority interest in a fully consolidated entity in China for an immaterial gain.

Retirement and Deferred Compensation Plans - Schedule of Changes in Fair Value of Pension Assets Measured Using Level 3 Inputs (Details) - Pension plans - Common contractual funds and insurance contracts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, beginning of year	$ 153.9	$ 108.8
Actual return on plan assets	30.5	4.2
Acquisitions	27.6
Transfers		46.2
Purchases, sales and settlements, net	2.5	(0.3)
Currency exchange rate changes	0.3	(5.0)
Fair value of plan assets, end of year	$ 214.8	$ 153.9

Retirement and Deferred Compensation Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Total	$ 7.4
Pension plans \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Net loss	15.8	$ 13.7
Total	15.8	13.7
Pension plans \| Non-United States Plans
Defined Benefit Plan Disclosure [Line Items]
Net loss	50.5	16.5
Prior service cost	7.8	7.7
Total	$ 58.3	$ 24.2

Derivative Financial Instruments

12 Months Ended

Dec. 31, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

(12) Derivative Financial Instruments

We are exposed to various market risks relating to our ongoing business operations. The primary market risks, which are managed using derivative instruments, are foreign currency exchange rate risk and interest rate risk. In certain circumstances, we enter into cross-currency swaps and foreign currency forward exchange contracts (“forward contracts”) to reduce the effects of fluctuating foreign currency exchange rates on our cash flows denominated in foreign currencies. Our exposure to market risk for changes in interest rates relates primarily to our long-term debt obligations. We have historically managed interest rate risk through the use of a combination of fixed and variable rate borrowings.

Net Investment Hedges

We use cross-currency swaps, forward contracts and a portion of our foreign currency denominated debt, a non-derivative financial instrument, to protect the value of our net investments in certain of our foreign subsidiaries. For derivative instruments that are designated and qualify as hedges of our net investments in foreign operations, the changes in fair values of the derivative instruments are recognized in foreign currency translation adjustments, a component of accumulated other comprehensive income (“AOCI”), to offset the changes in the values of the net investments being hedged. For non-derivative financial instruments that are designated and qualify as hedges of net investments in foreign operations, the change in the carrying value of the designated portion of the non-derivative financial instrument due to changes in foreign currency exchange rates is recorded in foreign currency translation adjustments.

The €400.0 ($447.1) notes due September 2022 and the €500.0 ($555.8) notes due June 2026 were designated as a hedge of our net investment in our foreign subsidiaries with a Euro-functional currency as of December 31, 2019.

In September 2019, we entered into a cross-currency swap agreement that net converts fixed-rate Swiss franc (“CHF”) payments to fixed-rate United States dollar payments. This swap was designated as a net investment hedge of our foreign subsidiary with CHF functional currency. The hedging relationship is expected to be perfectly effective, as the critical terms of the swap match the designated hedge. Effectiveness will be assessed prospectively and retrospectively every reporting period by confirming these conditions continue to be met. If they are no longer met at any time during the relationship, the hypothetical derivative method will be used to assess hedge effectiveness.

The effect of our net investment hedges on AOCI for the year ended December 31, 2019, and 2018 was as follows:

							Gain (Loss) Reclassified
	Gain (Loss) Recognized in OCI					Location of Gain (Loss) Reclassified	from AOCI into Income
	Year Ended December 31,					from AOCI into Income	Year Ended December 31,
Instrument	2019			2018			2019		2018
Euro Notes	$	22.9		$	45.4	Interest and other (income) expenses, net	$	—	$	—
Cross-currency swaps		(9.0	)		—	Interest and other (income) expenses, net		8.7		—

Cash Flow Hedges

We use cross-currency swaps to hedge the changes in cash flows of certain of our foreign currency denominated debt due to changes in foreign currency exchange rates. For our cross-currency swaps, we record the change in carrying value of the foreign currency denominated debt due to changes in exchange rates into earnings each period. The changes in fair value of the cross-currency swap derivatives are recorded in other comprehensive income (“OCI”) with an immediate reclassification into earnings for the change in fair value attributable to fluctuations in foreign currency exchange rates.

In April 2019, we entered into a cross-currency swap agreement to convert our intercompany fixed-rate, CHF denominated note, including the annual interest payment and the payment of remaining principal at maturity, to a fixed-rate Euro denominated note. The economic effect of the swap agreement is to eliminate the uncertainty of cash flows in CHF associated with the note by fixing the principal at €202.3 with a fixed annual interest rate of 1.256%. This hedging arrangement has been designated as a cash flow hedge. The swap matures in April 2022, which matches the term of the intercompany note. Gains and losses from the hedge offset the changes in the value of principal and interest payments as a result of changes in foreign exchange rates. In September 2019, we entered into to a cross-currency swap agreement to convert an additional intercompany fixed-rate CHF note, including the annual interest payment and the payment of remaining principal at maturity, to a fixed-rate Euro denominated note. The economic effect of the swap is identical to the original April 2019 swap, and fixes the principal of €55.4 with a fixed interest rate of 1.143%. The swap matures in September 2022, which matches the term of the intercompany note.

We assessed the hedging relationship at the inception of the hedge in order to determine whether the derivatives that are used in the hedging transaction are highly effective in offsetting the cash flows of the hedged item and will continue to assess the relationship on an ongoing basis. We apply the hypothetical derivative method in conjunction with regression analysis using a third-party valuation to measure effectiveness of our cross-currency swap agreement.

The following tables present the impact that changes in the fair values of derivatives designated as cash flow hedges had on OCI, AOCI and earnings for the year ended December 31, 2019, and 2018:

						Gain Reclassified
	Gain Recognized in OCI					from AOCI into Income
	Year Ended December 31,				Location of Gain Reclassified	Year Ended December 31,
Instrument	2019		2018		from AOCI into Income	2019		2018
Cross-currency swaps	$	7.3	$	—	Interest and other (income) expenses, net	$	8.3	$	—

We expect the net amount of pre-tax derivative gains and losses included in AOCI at December 31, 2019 to be reclassified into earnings to approximate $10.0 over the next twelve months. The actual amount that will be reclassified to earnings will vary due to future currency exchange rates.

Non-Designated Instruments

We also use certain derivatives, which are not designated as hedging instruments, as economic hedges of foreign currency and interest rate exposure. For our forward contracts that are not designated as hedges, any gain or loss resulting from the change in fair value is recognized in current period earnings. These gains or losses are offset by the exposure related to receivables and payables with our foreign subsidiaries and to interest due on our Euro-denominated notes, which is paid annually in June and September. The effect of our forward contracts that are not designated as hedging instruments on the consolidated statements of operations for the year ended December 31, 2019 was as follows:

	Location of Gain	Amount of Gain Recognized in Income
Instrument	Recognized in Income	Year Ended December 31,
		2019		2018
Foreign currency forward contracts	Interest and other (income) expenses, net	$	11.9	$	—

Derivative and Non-Derivative Assets and Liabilities

The following tables present the fair value of derivative and non-derivative assets and liabilities on the Consolidated Balance Sheets as of December 31, 2019, and 2018:

	Assets
		December 31,
	Balance Sheet Location	2019		2018
Instruments designated as cash flow hedges:
Cross-currency swaps	Prepaid expenses and other assets	$	9.7	$	—
Instruments not designated as hedges:
Foreign currency forward contracts	Accounts receivable, net		—		0.1
Total instruments		$	9.7	$	0.1

	Liabilities
		December 31,
	Balance Sheet Location	2019		2018
Instruments designated as net investment hedges:
Euro Notes	Long-term debt	$	1,002.9	$	1,024.6
Cross-currency swaps	Accrued liabilities		6.0		—
Instruments not designated as hedges:
Foreign currency forward contracts	Accrued liabilities		—		0.1
Total instruments		$	1,008.9	$	1,024.7

The fair value measurements of these items recorded in our Consolidated Balance Sheets for the years ended December 31, 2019 and 2018 are disclosed in Note 1 to the Consolidated Financial Statements.

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss,Net of Tax (Parenthetical) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Translation gain (loss) on derivative instruments, net of income taxes of $(9.1) and $(12.9), respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss, income taxes	$ (9.1)	$ (12.9)
Defined benefit pension plans and Retiree health care plan \| Defined benefit pension plans, net of income taxes of $(30.9) and $(23.2), respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss, income taxes	(30.9)	(23.2)
Defined benefit pension plans and Retiree health care plan \| Retiree health care plan, net of income taxes of $1.6 and $2.0, respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss, income taxes	$ 1.6	$ 2.0

Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

(5) Income Taxes

The provision for income taxes was as follows:

Year Ended December 31	2019			2018			2017
Current
United States
Federal	$	16.7		$	17.2		$	211.7
State		2.5			10.8			8.4
Non-United States		243.6			181.9			168.6
Total current		262.8			209.9			388.7
Deferred
United States
Federal		(22.1	)		(7.5	)		(178.2	)
State		1.1			1.0			(0.8	)
Non-United States		(22.0	)		(5.4	)		(17.8	)
Total deferred		(43.0	)		(11.9	)		(196.8	)
Total provision	$	219.8		$	198.0		$	191.9

A tax reconciliation between taxes computed at the United States federal statutory rate of 21% for 2019 and 2018 and 35% for 2017 and the consolidated effective tax rate is as follows:

Year Ended December 31	2019			2018			2017
Income tax based on statutory rate	$	143.9		$	158.5		$	258.1
Increase (decrease) resulting from:
Non-United States tax rate difference:
French business tax⁽¹⁾		54.9			59.1			46.9
French CICE⁽²⁾		—			(39.9	)		(77.1	)
Other⁽¹⁾⁽²⁾		37.3			20.0			(28.6	)
Repatriation of non-United States earnings⁽²⁾⁽³⁾		(17.8	)		2.5			69.7
State income taxes, net of federal benefit		3.1			8.2			1.1
Change in valuation allowance		20.0			0.7			(6.9	)
Work Opportunity Tax Credit		(10.4	)		(8.8	)		(10.5	)
Foreign-Derived Intangible Income deduction		(11.9	)		(12.5	)		—
United States Tax Act and French tax reform⁽³⁾		—			3.2			(73.7	)
Goodwill impairment⁽⁴⁾		11.9			—			—
Gain related to Manpower Switzerland and Greater China transactions⁽⁵⁾		(22.8	)		—			—
Other, net		11.6			7.0			12.9
Tax provision	$	219.8		$	198.0		$	191.9

(1) The French business tax is allowed as a deduction for French income tax purposes. The gross amount of the French business tax was $69.5, $74.8 and $72.1 for 2019, 2018 and 2017, respectively. The amounts in the table above of $54.9, $59.1 and $46.9 for 2019, 2018 and 2017, respectively, represent the French business tax expense net of the French tax benefit using the United States federal rate of 21% for 2019 and 2018 and 35% for 2017. Included in Other Non-United States tax rate differences are a benefit of $9.3 and $10.1 for 2019 and 2018, respectively, and an expense of $0.4 for 2017 related to the difference between the United States federal rate and the French tax rate applied to the respective gross amounts of the French business tax.

(2) The French CICE was a payroll tax credit that was tax-free for French tax purposes and increased French earnings. The amounts in the table above of $39.9 and $77.1 for 2018 and 2017, respectively, represent the French tax benefits using the United States federal rate of 21% for 2018 and 35% for 2017. Included in Other Non-United States tax rate differences are a benefit of $25.5 for 2018 and an expense of $1.3 for 2017 related to the difference between the United States federal rate and French tax rate applied to the respective gross French CICE amounts. In January 2019, the French government replaced the CICE subsidy with new subsidies that are taxable.

(3) Prior to the enactment of the Tax Act on December 22, 2017, we recorded $83.3 of tax expense in 2017 related to non-United States earnings that were deemed to be not permanently invested. This amount was included in the Repatriation of non-United States earnings consistent with prior years. As a result of the Tax Act, this $83.3 was reversed as we were no longer recording United States federal income tax expense on these earnings, and this tax benefit was included in the United States Tax Act and French tax reform benefit of $73.7.

(4) Non-deductible portion of the goodwill impairment charge recorded in Germany in June 2019.

(5) Non-taxable gains on the disposition of our previously held equity interest in Manpower Switzerland in April 2019 and the deconsolidation of ManpowerGroup Greater China Limited in July 2019.

Deferred income taxes are recorded based on temporary differences at the tax rate expected to be in effect when the temporary differences reverse. The Tax Act significantly impacted our deferred income taxes. Temporary differences, which give rise to the deferred taxes, are as follows:

December 31	2019			2018
Future Income Tax Benefits (Expense)
Accrued payroll taxes and insurance	$	12.8		$	13.8
Employee compensation payable		27.2			17.8
Pension and postretirement benefits		62.3			46.9
Intangible assets		(108.7	)		(102.1	)
Repatriation of non-United States earnings		(8.8	)		(15.3	)
Loans denominated in foreign currencies		(16.4	)		(19.6	)
Operating lease ROU assets		(115.8	)		—
Operating lease liabilities		118.1			—
Net operating losses		89.5			100.5
Other		135.0			97.4
Valuation allowance		(87.8	)		(72.4	)
Total future tax benefits	$	107.4		$	67.0
Deferred tax asset	$	126.2		$	99.3
Deferred tax liability		(18.8	)		(32.3	)
Total future tax benefits	$	107.4		$	67.0

Pre-tax earnings of non-United States operations were $416.6, $551.0 and $514.9 in 2019, 2018 and 2017, respectively. We have not provided deferred taxes on $371.5 of unremitted earnings of non-United States subsidiaries that are considered permanently invested. As of December 31, 2019, deferred taxes for non-United States withholding and other taxes were provided on $1,867.0 of unremitted earnings of non-United States subsidiaries that may be remitted to the United States. As of December 31, 2019 and 2018, we have recorded a deferred tax liability of $8.8 and $15.3, respectively, related to these non-United States earnings that may be remitted.

We had United States federal and non-United States net operating loss carryforwards and United States state net operating loss carryforwards totaling $399.4 and $169.2, respectively, as of December 31, 2019. The net operating loss carryforwards expire as follows:

	United States Federal and Non-United States		United States State
2020	$	2.1	$	0.2
2021		5.3		3.0
2022		3.8		11.1
2023		3.9		9.8
2024		5.7		57.3
Thereafter		25.2		87.8
No expirations		353.4		—
Total net operating loss carryforwards	$	399.4	$	169.2

We have recorded a deferred tax asset of $89.5 as of December 31, 2019, for the benefit of these net operating losses. Realization of this asset is dependent on generating sufficient taxable income prior to the expiration of the loss carryforwards. A related valuation allowance of $72.7 was recorded as of December 31, 2019, as management believed that realization of certain net operating loss carryforwards is unlikely.

As of December 31, 2019, we had gross unrecognized tax benefits related to various tax jurisdictions, including interest and penalties, of $69.5 that would favorably affect the effective tax rate if recognized. During 2019, we filed our 2018 United States federal tax return with a position related to the transition tax imposed as part of the Tax Act, resulting in an increase to our unrecognized tax benefits of $32.0 with minimal impact to the tax provision. We do not expect our unrecognized tax benefits to change significantly over the next year.

As of December 31, 2018, we had gross unrecognized tax benefits related to various tax jurisdictions, including interest and penalties, of $34.2.

We recognize accrued interest and penalties related to unrecognized tax benefits in income tax expense. In 2019, we accrued net interest and penalties of $1.6. In 2018, we recognized a reduction of interest and penalties due to the settlement of tax litigation of $18.4. We accrued net interest and penalties of $0.2 in 2017.

The following table summarizes the activity related to our unrecognized tax benefits during 2019, 2018 and 2017:

	2019			2018			2017
Gross unrecognized tax benefits, beginning of year	$	32.2		$	46.1		$	23.8
Increases in prior year tax positions		35.7			11.4			27.1
Decreases in prior year tax positions		(2.6	)		(1.8	)		(1.2	)
Increases for current year tax positions		4.7			5.9			6.6
Expiration of statute of limitations and audit settlements		(4.1	)		(29.4	)		(10.2	)
Gross unrecognized tax benefits, end of year	$	65.9		$	32.2		$	46.1
Potential interest and penalties		3.6			2.0			20.4
Balance, end of year	$	69.5		$	34.2		$	66.5

We conduct business globally in various countries and territories. We are routinely audited by the tax authorities of the various tax jurisdictions in which we operate. Generally, the tax years that could be subject to examination are 2012 through 2019 for our major operations in France, Germany, Japan, the United Kingdom and the United States. As of December 31, 2019, we were subject to tax audits in Austria, Canada, Denmark, Germany, Israel, and the United States. We believe that the resolution of these audits will not have a material impact on earnings.

Debt - Additional Information (Details)		12 Months Ended
Debt - Additional Information (Details)	Jun. 22, 2018 EUR (€)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Credit lines, remaining borrowing capacity		$ 229,500,000
2021		100,000
2022		454,500,000
2023		2,000,000.0
2024		0.0
Notes due June 2026
Debt Instrument [Line Items]
Principal amount \| €	€ 500,000,000.0		€ 500,000,000.0
Interest rate (as a percent)	1.75%
Net proceeds \| €	€ 495,700,000
Discounted issue price (as a percent)	99.564%
Effective interest rate (as a percent)	1.809%
Notes due June 2026 \| Designated as economic hedges \| Euro-denominated notes
Debt Instrument [Line Items]
Principal amount		$ 555,800,000	500,000,000.0
Notes due June 2018
Debt Instrument [Line Items]
Principal amount \| €	€ 350,000,000.0
Notes due September 2022
Debt Instrument [Line Items]
Principal amount \| €			€ 400,000,000.0
Interest rate (as a percent)		1.875%	1.875%
Notes due September 2022 \| Designated as economic hedges \| Euro-denominated notes
Debt Instrument [Line Items]
Principal amount		$ 447,100,000	€ 400,000,000.0
Uncommitted credit lines
Debt Instrument [Line Items]
Credit lines, maximum borrowing capacity		324,100,000
Credit lines, remaining borrowing capacity		253,600,000
Uncommitted credit lines \| First, second, and fourth quarters
Debt Instrument [Line Items]
Credit lines, maximum borrowing capacity		300,000,000.0
Uncommitted credit lines \| Third quarter
Debt Instrument [Line Items]
Credit lines, maximum borrowing capacity		600,000,000.0
Five year credit agreement
Debt Instrument [Line Items]
Credit lines, maximum borrowing capacity		600,000,000.0
Credit lines, remaining borrowing capacity		$ 599,500,000		$ 599,500,000
Credit agreement term		5 years
Outstanding letters of credit		$ 500,000		500,000
Credit facility, expiration date		Jun. 18, 2023
Facility fee (as a percent)		0.125%
Credit spread (as a percent)		1.00%
Maximum debt-to-EBITDA ratio		0.035
Minimum fixed charge coverage ratio		0.015
Stand-by letters of credit
Debt Instrument [Line Items]
Credit lines, maximum borrowing capacity		$ 150,000,000.0
Outstanding letters of credit		$ 0		$ 0

Quarterly Data (Unaudited) (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended					12 Months Ended
	Apr. 03, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Line Items]
Restructuring costs				$ 39.8	$ 15.3	$ 24.0
Restructuring costs, net of tax				$ 31.4	$ 11.8	$ 18.1
Restructuring costs per diluted share (in dollars per share)				$ (0.51)	$ (0.18)	$ (0.27)
Gain on disposition of previously held controlling interest							$ 30.4
Goodwill and related tax and other charges per diluted share (in dollars per share)			$ (1.26)
Selling and Administrative Expenses
Quarterly Financial Information Disclosure [Line Items]
Goodwill impairment and related charges			$ 65.6
Provision for Income Taxes
Quarterly Financial Information Disclosure [Line Items]
Goodwill impairment, related tax charges			$ 10.3
Manpower Switzerland
Quarterly Financial Information Disclosure [Line Items]
Gain on disposition of previously held equity interest per diluted share (in dollars per share)			$ 1.32
Manpower Switzerland \| Interest and Other Expenses (Income), Net
Quarterly Financial Information Disclosure [Line Items]
Gain on disposition of previously held equity interest	$ 80.4		$ 80.4				80.4	$ 80.4	$ 80.4
ManpowerGroup Greater China Limited
Quarterly Financial Information Disclosure [Line Items]
Gain on disposition of previously held controlling interest		$ 30.4
Gain on disposition of previously held controlling interest per diluted share (in dollars per share)		$ 0.50
ManpowerGroup Greater China Limited \| Selling and Administrative Expenses
Quarterly Financial Information Disclosure [Line Items]
Gain on disposition of previously held controlling interest							$ 30.4

Share-Based Compensation Plans - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Outstanding at beginning of period (in shares)	672	574	1,127
Granted (in shares)	174	122	145
Exercised (in shares)	(79)	(24)	(680)
Expired or cancelled (in shares)	(44)		(18)
Outstanding at end of period (in shares)	723	672	574
Vested or expected to vest (in shares)	722	670	571
Exercisable (in shares)	426	401	220
Wtd. Avg. Exercise Price Per Share
Outstanding at beginning of period (in dollars per share)	$ 85	$ 77	$ 66
Granted (in dollars per share)	84	123	97
Exercised (in dollars per share)	65	78	64
Expired or cancelled (in dollars per share)	91		75
Outstanding at end of period (in dollars per share)	87	85	77
Vested or expected to vest (in dollars per share)	87	85	77
Exercisable (in dollars per share)	$ 82	$ 76	$ 65
Wtd. Avg. Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding (in years)	6 years 1 month 6 days	5 years 10 months 24 days	7 years 1 month 6 days
Vested or expected to vest (in years)	6 years 1 month 6 days	5 years 10 months 24 days	7 years 1 month 6 days
Exercisable (in years)	4 years 6 months	4 years 6 months	5 years 3 months 18 days
Outstanding	$ 10	$ 1	$ 28
Exercised	2	1	24
Exercisable	$ 8	$ 1	$ 14

Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Effect of Net Investment Hedges on AOCI

The effect of our net investment hedges on AOCI for the year ended December 31, 2019, and 2018 was as follows:

							Gain (Loss) Reclassified
	Gain (Loss) Recognized in OCI					Location of Gain (Loss) Reclassified	from AOCI into Income
	Year Ended December 31,					from AOCI into Income	Year Ended December 31,
Instrument	2019			2018			2019		2018
Euro Notes	$	22.9		$	45.4	Interest and other (income) expenses, net	$	—	$	—
Cross-currency swaps		(9.0	)		—	Interest and other (income) expenses, net		8.7		—

Impact of Changes in Fair Values of Derivatives Designated as Cash Flow Hedges on OCI, AOCI and Earnings

The following tables present the impact that changes in the fair values of derivatives designated as cash flow hedges had on OCI, AOCI and earnings for the year ended December 31, 2019, and 2018:

						Gain Reclassified
	Gain Recognized in OCI					from AOCI into Income
	Year Ended December 31,				Location of Gain Reclassified	Year Ended December 31,
Instrument	2019		2018		from AOCI into Income	2019		2018
Cross-currency swaps	$	7.3	$	—	Interest and other (income) expenses, net	$	8.3	$	—

Effect of Forward Contracts not Designated as Hedging Instrument

The effect of our forward contracts that are not designated as hedging instruments on the consolidated statements of operations for the year ended December 31, 2019 was as follows:

	Location of Gain	Amount of Gain Recognized in Income
Instrument	Recognized in Income	Year Ended December 31,
		2019		2018
Foreign currency forward contracts	Interest and other (income) expenses, net	$	11.9	$	—

Fair Value of Derivative and Non-Derivative Assets and Liabilities on the Consolidated Balance Sheets

The following tables present the fair value of derivative and non-derivative assets and liabilities on the Consolidated Balance Sheets as of December 31, 2019, and 2018:

	Assets
		December 31,
	Balance Sheet Location	2019		2018
Instruments designated as cash flow hedges:
Cross-currency swaps	Prepaid expenses and other assets	$	9.7	$	—
Instruments not designated as hedges:
Foreign currency forward contracts	Accounts receivable, net		—		0.1
Total instruments		$	9.7	$	0.1

	Liabilities
		December 31,
	Balance Sheet Location	2019		2018
Instruments designated as net investment hedges:
Euro Notes	Long-term debt	$	1,002.9	$	1,024.6
Cross-currency swaps	Accrued liabilities		6.0		—
Instruments not designated as hedges:
Foreign currency forward contracts	Accrued liabilities		—		0.1
Total instruments		$	1,008.9	$	1,024.7

Leases - Maturities of Operating Lease Liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Period Ending December 31, 2019
2020	$ 133.8
2021	102.7
2022	78.7
2023	54.1
2024	38.6
Thereafter	96.0
Total future undiscounted lease payments	503.9
Less imputed interest	(45.1)
Total operating lease liabilities	$ 458.8

Goodwill (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill by Reportable Segment

Changes in the carrying value of goodwill by reportable segment and Corporate were as follows:

	Americas⁽¹⁾			Southern Europe⁽²⁾			Northern Europe			APME			Right Management		Corporate⁽³⁾			Total⁽⁴⁾
Balance, January 1, 2018	$	519.2		$	121.9		$	468.1		$	106.2		$	62.1	$	65.5		$	1,343.0
Goodwill acquired		4.6			—			—			1.5			—		—			6.1
Goodwill allocated to business units sold		—			—			(8.8	)		—			—		—			(8.8	)
Currency impact and other		(3.9	)		(9.7	)		(23.9	)		(5.7	)		—		—			(43.2	)
Balance, December 31, 2018		519.9			112.2			435.4			102.0			62.1		65.5			1,297.1
Goodwill acquired		14.2			33.8			—			—			—		—			48.0
Goodwill allocated to business units deconsolidated⁽⁵⁾		—			—			—			(18.5	)		—		(1.6	)		(20.1	)
Impairment charge⁽⁶⁾		—			—			(60.2	)		(3.8	)		—		—			(64.0	)
Currency impact and other		1.5			(1.2	)		(0.6	)		(0.6	)		—		—			(0.9	)
Balance, December 31, 2019	$	535.6		$	144.8		$	374.6		$	79.1		$	62.1	$	63.9		$	1,260.1

(1) Balances related to United States were $476.5 as of January 1, 2018 and December 31, 2018, respectively, and $490.3 as of December 31, 2019.

(2) Balances related to France were $76.3, $68.9 and $67.3 as of January 1, 2018, December 31, 2018 and December 31, 2019, respectively. Balances related to Italy were $5.0, $4.8 and $4.6 as of January 1, 2018, December 31, 2018 and December 31, 2019, respectively.

(3) The majority of the Corporate balance as of December 31, 2019 relates to goodwill attributable to our acquisition of Jefferson Wells ($55.5) which is part of the United States reporting unit. For purposes of monitoring our total assets by segment, we do not allocate the Corporate balance to the respective reportable segments. We do, however, include these balances within the appropriate reporting units for our goodwill impairment testing. See the table below for the breakout of goodwill balances by reporting unit.

(4) Balances were net of accumulated impairment loss of $513.4 ($235.2 related to Right Management and $278.2 related to Corporate) as of January 1, 2018 and December 31, 2018, respectively, and $577.4 ($60.2 related to Northern Europe, $3.8 related to APME, $235.2 related to Right Management and $278.2 related to Corporate) as of December 31, 2019.

(5) Reductions relate to our China and Hong Kong reporting units, which were deconsolidated as of July 10, 2019. See Note 4 to the Consolidated Financial Statements for further information.

(6) The impairment charges of $60.2 and $3.8 relate to our Germany and New Zealand reporting units, respectively, which were recorded during the second quarter of 2019. See Note 1 to the Consolidated Financial Statements for further information.

Schedule of Goodwill Balances by Reporting Unit

Goodwill balances by reporting unit were as follows:

December 31	2019		2018
United States	$	545.8	$	532.0
Netherlands		109.5		112.0
United Kingdom		97.3		93.7
France		67.3		68.9
Germany		67.2		129.2
Right Management		62.1		62.1
Other reporting units		310.9		299.2
Total goodwill	$	1,260.1	$	1,297.1

Segment Data - Schedule of Segment Data (Details) - USD ($)	3 Months Ended									12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenues from Services	$ 5,196,600,000	$ 5,248,900,000	$ 5,373,100,000	$ 5,044,900,000	$ 5,393,200,000	$ 5,418,700,000	$ 5,656,900,000	$ 5,522,400,000		$ 20,863,500,000	$ 21,991,200,000	$ 21,034,300,000
Operating Unit Profit										860,600,000	941,800,000	932,200,000
Corporate expenses										(121,900,000)	(110,000,000.0)	(108,400,000)
Impairment charge		$ 0				$ 0			$ 0	(64,000,000.0)
Intangible asset amortization expense										(29,800,000)	(35,100,000)	(34,600,000)
Interest and other income (expenses), net										40,600,000	(42,000,000.0)	(51,900,000)
Earnings before income taxes										685,500,000	754,700,000	737,300,000
Depreciation and Amortization Expense										77,200,000	85,800,000	84,400,000
Earnings from Equity Investments										50,500,000	1,200,000	15,000,000.0
Total Assets	9,223,800,000				8,519,800,000					9,223,800,000	8,519,800,000	8,883,600,000
Equity Investments	97,800,000				161,400,000					97,800,000	161,400,000	158,700,000
Long-Lived Assets	150,900,000				160,000,000.0					150,900,000	160,000,000.0	161,300,000
Additions to Long-Lived Assets										48,700,000	60,300,000	53,900,000
Corporate
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										100,000	100,000	200,000
Total Assets	489,400,000				520,900,000					489,400,000	520,900,000	499,200,000
Equity Investments	97,500,000				1,000,000.0					97,500,000	1,000,000.0	1,000,000.0
Long-Lived Assets	200,000				100,000					200,000	100,000	100,000
Additions to Long-Lived Assets										100,000	100,000	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Intangible asset amortization expense										29,800,000	35,100,000	34,600,000
Americas
Segment Reporting Information [Line Items]
Revenues from Services										4,182,300,000	4,159,300,000	4,216,400,000
Operating Unit Profit										186,300,000	203,900,000	213,300,000
Earnings from Equity Investments										0	0	0
Americas \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										10,300,000	10,400,000	11,800,000
Total Assets	2,487,000,000.0				2,168,900,000					2,487,000,000.0	2,168,900,000	2,110,600,000
Equity Investments	0				0					0	0	0
Long-Lived Assets	28,000,000.0				25,600,000					28,000,000.0	25,600,000	26,700,000
Americas \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										12,600,000	10,400,000	9,100,000
Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										9,166,400,000	9,371,600,000	8,657,000,000.0
Operating Unit Profit										454,600,000	467,600,000	443,900,000
Earnings from Equity Investments										47,400,000	1,500,000	15,000,000.0
Southern Europe \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										20,400,000	20,700,000	18,800,000
Total Assets	3,957,100,000				3,711,400,000					3,957,100,000	3,711,400,000	3,786,000,000.0
Equity Investments	300,000				158,100,000					300,000	158,100,000	157,600,000
Long-Lived Assets	75,000,000.0				77,600,000					75,000,000.0	77,600,000	77,100,000
Southern Europe \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										19,800,000	26,200,000	25,700,000
Northern Europe
Segment Reporting Information [Line Items]
Revenues from Services										4,691,300,000	5,370,500,000	5,306,400,000
Operating Unit Profit										67,100,000	122,700,000	140,100,000
Earnings from Equity Investments										0	0	0
Northern Europe \| Reportable segments
Segment Reporting Information [Line Items]
Impairment charge										(60,200,000)
Depreciation and Amortization Expense										9,500,000	11,000,000.0	10,600,000
Total Assets	1,470,600,000				1,237,000,000.0					1,470,600,000	1,237,000,000.0	1,569,000,000.0
Equity Investments	0				0					0	0	0
Long-Lived Assets	27,100,000				29,900,000					27,100,000	29,900,000	28,000,000.0
Northern Europe \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										7,600,000	16,600,000	11,800,000
APME
Segment Reporting Information [Line Items]
Revenues from Services										2,627,200,000	2,890,300,000	2,636,400,000
Operating Unit Profit										122,600,000	114,800,000	98,900,000
Earnings from Equity Investments										3,100,000	(300,000)	0
APME \| Reportable segments
Segment Reporting Information [Line Items]
Impairment charge										(3,800,000)
Depreciation and Amortization Expense										5,600,000	5,700,000	4,700,000
Total Assets	707,600,000				754,000,000.0					707,600,000	754,000,000.0	780,700,000
Equity Investments	0				2,300,000					0	2,300,000	100,000
Long-Lived Assets	18,400,000				21,500,000					18,400,000	21,500,000	21,400,000
APME \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										8,000,000.0	6,800,000	6,300,000
Right Management
Segment Reporting Information [Line Items]
Revenues from Services										196,300,000	199,500,000	218,100,000
Operating Unit Profit										30,000,000.0	32,800,000	36,000,000.0
Earnings from Equity Investments										0	0	0
Right Management \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										1,500,000	2,800,000	3,700,000
Total Assets	112,100,000				127,600,000					112,100,000	127,600,000	138,100,000
Equity Investments	0				0					0	0	0
Long-Lived Assets	2,200,000				5,300,000					2,200,000	5,300,000	8,000,000.0
Right Management \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										600,000	200,000	1,000,000.0
United States \| Americas
Segment Reporting Information [Line Items]
Revenues from Services										2,507,000,000.0	2,522,300,000	2,659,000,000.0
Earnings from Equity Investments										0	0	0
United States \| Americas \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										8,000,000.0	8,200,000	9,300,000
Total Assets	2,107,800,000				1,827,400,000					2,107,800,000	1,827,400,000	1,781,400,000
Equity Investments	0				0					0	0	0
Long-Lived Assets	20,000,000.0				19,600,000					20,000,000.0	19,600,000	20,600,000
United States \| Americas \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										8,100,000	7,600,000	6,700,000
Other Americas \| Americas
Segment Reporting Information [Line Items]
Revenues from Services										1,675,300,000	1,637,000,000.0
Earnings from Equity Investments										0	0	0
Other Americas \| Americas \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										2,300,000	2,200,000	2,500,000
Total Assets	379,200,000				341,500,000					379,200,000	341,500,000	329,200,000
Equity Investments	0				0					0	0	0
Long-Lived Assets	8,000,000.0				6,000,000.0					8,000,000.0	6,000,000.0	6,100,000
Other Americas \| Americas \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										4,500,000	2,800,000	2,400,000
France \| Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										5,459,700,000	5,827,700,000
Earnings from Equity Investments										0	0	0
France \| Southern Europe \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										13,700,000	14,000,000.0	12,300,000
Total Assets	2,722,700,000				2,729,700,000					2,722,700,000	2,729,700,000	2,753,100,000
Equity Investments	0				0					0	0	0
Long-Lived Assets	46,300,000				49,200,000					46,300,000	49,200,000	47,900,000
France \| Southern Europe \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										12,800,000	18,100,000	15,200,000
Italy \| Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										1,506,500,000	1,670,600,000
Earnings from Equity Investments										(100,000)	(200,000)	0
Italy \| Southern Europe \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										1,800,000	1,900,000	1,800,000
Total Assets	463,400,000				405,000,000.0					463,400,000	405,000,000.0	436,700,000
Equity Investments	300,000				300,000					300,000	300,000	400,000
Long-Lived Assets	5,200,000				5,000,000.0					5,200,000	5,000,000.0	4,900,000
Italy \| Southern Europe \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										2,100,000	2,200,000	1,700,000
Other Southern Europe \| Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										2,200,200,000	1,873,300,000
Earnings from Equity Investments										47,500,000	1,700,000	15,000,000.0
Other Southern Europe \| Southern Europe \| Reportable segments
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense										4,900,000	4,800,000	4,700,000
Total Assets	771,000,000.0				576,700,000					771,000,000.0	576,700,000	596,200,000
Equity Investments	0				157,800,000					0	157,800,000	157,200,000
Long-Lived Assets	$ 23,500,000				$ 23,400,000					23,500,000	23,400,000	24,300,000
Other Southern Europe \| Southern Europe \| Segment Reconciling Items
Segment Reporting Information [Line Items]
Additions to Long-Lived Assets										4,900,000	5,900,000	8,800,000
Reportable subsegments \| United States \| Americas
Segment Reporting Information [Line Items]
Operating Unit Profit										113,200,000	130,800,000	152,100,000
Reportable subsegments \| Other Americas \| Americas
Segment Reporting Information [Line Items]
Revenues from Services										1,675,300,000	1,637,000,000.0	1,557,400,000
Operating Unit Profit										73,100,000	73,100,000	61,200,000
Reportable subsegments \| France \| Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										5,459,700,000	5,827,700,000	5,477,200,000
Operating Unit Profit										284,300,000	290,400,000	280,000,000.0
Reportable subsegments \| Italy \| Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										1,506,500,000	1,670,600,000	1,475,900,000
Operating Unit Profit										102,600,000	111,100,000	104,500,000
Reportable subsegments \| Other Southern Europe \| Southern Europe
Segment Reporting Information [Line Items]
Revenues from Services										2,200,200,000	1,873,300,000	1,703,900,000
Operating Unit Profit										$ 67,700,000	$ 66,100,000	$ 59,400,000

Retirement and Deferred Compensation Plans - Schedule of Plans with Projected Benefit Obligation in Excess of Fair Value of Plan Assets (Details) - Pension plans - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 414.6	$ 135.8
Plan assets	$ 324.3	$ 67.0

Leases - Weighted Average Remaining Lease Term and Discount Rate (Details)	Dec. 31, 2019
Weighted Average Remaining Lease Term
Operating leases	5 years 7 months 6 days
Weighted Average Discount Rate
Operating leases	3.10%

Leases - Components of Lease Expense and Other Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease expense	$ 153.5
Short-term lease expense	17.6
Variable lease expense	15.8
Total lease expense	186.9
Supplemental Cash Flow Information
Cash paid for amounts included in the measurement of operating lease liabilities	150.1
Operating ROU assets obtained in exchange for lease obligations	$ 129.3

Segment Data (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Schedule of Segment Data

Year Ended December 31	2019			2018			2017
Revenues from Services^(a)
Americas:
United States^(b)	$	2,507.0		$	2,522.3		$	2,659.0
Other Americas		1,675.3			1,637.0			1,557.4
		4,182.3			4,159.3			4,216.4
Southern Europe:
France		5,459.7			5,827.7			5,477.2
Italy		1,506.5			1,670.6			1,475.9
Other Southern Europe		2,200.2			1,873.3			1,703.9
		9,166.4			9,371.6			8,657.0
Northern Europe		4,691.3			5,370.5			5,306.4
APME		2,627.2			2,890.3			2,636.4
Right Management		196.3			199.5			218.1
	$	20,863.5		$	21,991.2		$	21,034.3
Operating Unit Profit
Americas:
United States	$	113.2		$	130.8		$	152.1
Other Americas		73.1			73.1			61.2
		186.3			203.9			213.3
Southern Europe:
France		284.3			290.4			280.0
Italy		102.6			111.1			104.5
Other Southern Europe		67.7			66.1			59.4
		454.6			467.6			443.9
Northern Europe		67.1			122.7			140.1
APME		122.6			114.8			98.9
Right Management		30.0			32.8			36.0
	$	860.6		$	941.8		$	932.2
Corporate expenses		(121.9	)		(110.0	)		(108.4	)
Goodwill impairment charge		(64.0	)		—			—
Intangible asset amortization expense^(c)		(29.8	)		(35.1	)		(34.6	)
Interest and other income (expenses), net		40.6			(42.0	)		(51.9	)
Earnings before income taxes	$	685.5		$	754.7		$	737.3

(a) Further breakdown of revenues from services by geographical region was as follows:

Revenues from Services	2019		2018		2017
United States	$	2,590.6	$	2,608.9	$	2,758.5
France		5,479.6		5,846.4		5,493.9
Italy		1,508.3		1,673.9		1,479.4
United Kingdom		1,598.6		1,672.1		1,619.2
Total Foreign		18,272.9		19,382.3		18,275.8

(c) Intangible asset amortization related to acquisitions is excluded from operating costs within the reportable segments and corporate expenses, and shown separately.

Schedule of Revenues from Services by Geographical Region

Further breakdown of revenues from services by geographical region was as follows:

Revenues from Services	2019		2018		2017
United States	$	2,590.6	$	2,608.9	$	2,758.5
France		5,479.6		5,846.4		5,493.9
Italy		1,508.3		1,673.9		1,479.4
United Kingdom		1,598.6		1,672.1		1,619.2
Total Foreign		18,272.9		19,382.3		18,275.8

Schedule of Segment Information - Depreciation and Amortization Expense, Earnings from Equity Investment, Total Assets, Equity Investments, Long-Lived Assets and Additions to Long-Lived Assets

Year Ended December 31	2019			2018			2017
Depreciation and Amortization Expense
Americas:
United States	$	8.0		$	8.2		$	9.3
Other Americas		2.3			2.2			2.5
		10.3			10.4			11.8
Southern Europe:
France		13.7			14.0			12.3
Italy		1.8			1.9			1.8
Other Southern Europe		4.9			4.8			4.7
		20.4			20.7			18.8
Northern Europe		9.5			11.0			10.6
APME		5.6			5.7			4.7
Right Management		1.5			2.8			3.7
Corporate expenses		0.1			0.1			0.2
Intangible asset amortization expense^(a)		29.8			35.1			34.6
	$	77.2		$	85.8		$	84.4
Earnings from Equity Investments
Americas:
United States	$	—		$	—		$	—
Other Americas		—			—			—
		—			—			—
Southern Europe:
France		—			—			—
Italy		(0.1	)		(0.2	)		—
Other Southern Europe		47.5			1.7			15.0
		47.4			1.5			15.0
Northern Europe		—			—			—
APME		3.1			(0.3	)		—
Right Management		—			—			—
	$	50.5		$	1.2		$	15.0

(a) Intangible asset amortization related to acquisitions is excluded from operating costs within the reportable segments and corporate expenses, and shown separately.

As of December 31	2019		2018		2017
Total Assets
Americas:
United States	$	2,107.8	$	1,827.4	$	1,781.4
Other Americas		379.2		341.5		329.2
		2,487.0		2,168.9		2,110.6
Southern Europe:
France		2,722.7		2,729.7		2,753.1
Italy		463.4		405.0		436.7
Other Southern Europe		771.0		576.7		596.2
		3,957.1		3,711.4		3,786.0
Northern Europe		1,470.6		1,237.0		1,569.0
APME		707.6		754.0		780.7
Right Management		112.1		127.6		138.1
Corporate^(a)		489.4		520.9		499.2
	$	9,223.8	$	8,519.8	$	8,883.6
Equity Investments
Americas:
United States	$	—	$	—	$	—
Other Americas		—		—		—
		—		—		—
Southern Europe:
France		—		—		—
Italy		0.3		0.3		0.4
Other Southern Europe		—		157.8		157.2
		0.3		158.1		157.6
Northern Europe		—		—		—
APME		—		2.3		0.1
Right Management		—		—		—
Corporate		97.5		1.0		1.0
	$	97.8	$	161.4	$	158.7

(a) Corporate assets include assets that were not used in the operations of any segment, the most significant of which were purchased intangibles and cash.

As of and Year Ended December 31	2019		2018		2017
Long-lived Assets^(a)
Americas:
United States	$	20.0	$	19.6	$	20.6
Other Americas		8.0		6.0		6.1
		28.0		25.6		26.7
Southern Europe:
France		46.3		49.2		47.9
Italy		5.2		5.0		4.9
Other Southern Europe		23.5		23.4		24.3
		75.0		77.6		77.1
Northern Europe		27.1		29.9		28.0
APME		18.4		21.5		21.4
Right Management		2.2		5.3		8.0
Corporate		0.2		0.1		0.1
	$	150.9	$	160.0	$	161.3
Additions to Long-Lived Assets
Americas:
United States	$	8.1	$	7.6	$	6.7
Other Americas		4.5		2.8		2.4
		12.6		10.4		9.1
Southern Europe:
France		12.8		18.1		15.2
Italy		2.1		2.2		1.7
Other Southern Europe		4.9		5.9		8.8
		19.8		26.2		25.7
Northern Europe		7.6		16.6		11.8
APME		8.0		6.8		6.3
Right Management		0.6		0.2		1.0
Corporate		0.1		0.1		—
	$	48.7	$	60.3	$	53.9

(a) Further breakdown of long-lived assets by geographical region was as follows:

Long-Lived Assets	2019		2018		2017
United States	$	20.5	$	22.4	$	24.9
France		46.9		50.1		49.1
Italy		5.2		5.0		4.9
United Kingdom		5.8		7.0		9.1
Total Foreign		130.4		137.6		136.4

Schedule of Long-Lived Assets by Geographical Region

Further breakdown of long-lived assets by geographical region was as follows:

Long-Lived Assets	2019		2018		2017
United States	$	20.5	$	22.4	$	24.9
France		46.9		50.1		49.1
Italy		5.2		5.0		4.9
United Kingdom		5.8		7.0		9.1
Total Foreign		130.4		137.6		136.4

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2019	Feb. 19, 2020	Jun. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	MANPOWERGROUP INC.
Entity Central Index Key	0000871763
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 5,779,906,730
Entity Common Stock, Shares Outstanding		58,778,496
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	MAN
Security Exchange Name	NYSE
Entity File Number	1-10686
Entity Incorporation, State or Country Code	WI
Entity Tax Identification Number	39-1672779
Entity Address, Address Line One	100 manpower place
Entity Address, City or Town	milwaukee
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	53212
City Area Code	(414)
Local Phone Number	961-1000
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Part III is incorporated by reference from the Proxy Statement for the Annual Meeting of Shareholders to be held on May 8, 2020.

Acquisitions and Dispositions (Tables)

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Schedule of Preliminary Allocation of Assets and Liabilities

The following table summarizes the fair value of the assets and liabilities as of the acquisition date of April 3, 2019:


Cash and cash equivalents	$	317.5
Accounts receivable		60.4
Prepaid expenses and other assets		31.4
Goodwill		33.8
Intangible assets subject to amortization, customer relationship		19.6
Intangible assets not subject to amortization, reacquired franchise rights		25.5
Property and equipment		0.4
Accounts payable		(21.6	)
Employee compensation payable		(2.5	)
Accrued liabilities		(9.9	)
Accrued payroll taxes and insurance		(7.5	)
Value added taxes payable		(7.4	)
Other long-term liabilities		(24.6	)
Total assets and liabilities	$	415.1

Summary of Consolidated Unaudited Proforma Historical Net Revenues from Services

Our consolidated unaudited proforma historical revenues from services, as if Manpower Switzerland had been acquired at the beginning of 2018, are estimated as follows:

	Year Ended December 31,
	2019		2018
Revenues from services	$	20,957.9	$	22,452.6

Interest and Other (Income) Expenses, Net

12 Months Ended

Dec. 31, 2019

Other Nonoperating Income Expense [Abstract]

Interest and Other (Income) Expenses, Net

(11) Interest and Other (Income) Expenses, Net

Interest and other (income) expenses, net consisted of the following:

Year Ended December 31	2019			2018			2017
Interest expense	$	44.4		$	47.0		$	49.4
Interest income		(6.0	)		(6.0	)		(4.8	)
Foreign exchange loss		6.7			1.4			0.8
Miscellaneous (income) expense, net ⁽¹⁾		(85.7	)		(0.4	)		6.5
Interest and other (income) expenses, net	$	(40.6	)	$	42.0		$	51.9

(1) Includes an $80.4 gain related to our acquisition of the remaining controlling interest in Manpower Switzerland. See Note 4 to the Consolidated Financial Statements for further information.

Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term debt	$ 1,012.4	$ 1,025.5
Less current maturities		0.2
Long-term debt	1,012.4	1,025.3
Notes due June 2026
Debt Instrument [Line Items]
Long-term debt	555.8	567.8
€400 due September 2022
Debt Instrument [Line Items]
Long-term debt	447.1	456.8
Other
Debt Instrument [Line Items]
Long-term debt	$ 9.5	$ 0.9

Leases - Supplemental Balance Sheet Information (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
Operating lease ROU assets	$ 448.5
Operating lease liabilities - current	122.1
Operating lease liabilities - long-term	336.7
Total operating lease liabilities	$ 458.8

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net earnings	$ 465.7	$ 556.7	$ 545.4
Other comprehensive (loss) income:
Foreign currency translation	(11.0)	(135.5)	201.4
Translation adjustments on derivative instruments, net of income taxes of $3.8, $10.2 and $(34.3), respectively	17.8	35.2	(64.7)
Translation adjustments on long-term intercompany loans	15.7	(8.4)	4.9
Unrealized loss on investments, net of income taxes of $(0.8) for 2017			(3.3)
Defined benefit pension plans and retiree health care plan, net of income taxes of $(8.1), $4.6 and $(0.1), respectively	(37.4)	12.4	(0.4)
Total other comprehensive (loss) income	(41.2)	(96.3)	137.9
Comprehensive income	424.5	$ 460.4	$ 683.3
Manpower Switzerland
Other comprehensive (loss) income:
Reclassification of currency translation adjustment to income related to disposition of partially held equity interest (see Note 4)	(32.5)
ManpowerGroup Greater China Limited
Other comprehensive (loss) income:
Reclassification of currency translation adjustment to income related to disposition of partially held equity interest (see Note 4)	$ 6.2

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities
Net earnings	$ 465,700,000	$ 556,700,000	$ 545,400,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	77,200,000	85,800,000	84,400,000
Non-cash gain on disposition of previously held equity interest	(80,400,000)
Non-cash gain on disposition of previously held controlling interest	(30,400,000)
Goodwill impairment charge	64,000,000.0
Deferred income taxes	(43,000,000.0)	(11,900,000)	(196,800,000)
Provision for doubtful accounts	21,800,000	23,000,000.0	18,100,000
Share-based compensation	26,300,000	27,800,000	28,700,000
Change in operating assets and liabilities, excluding the impact of acquisitions:
Accounts receivable	(80,200,000)	(146,400,000)	(544,900,000)
Other assets	122,300,000	58,700,000	(68,600,000)
Other liabilities	271,100,000	(110,600,000)	534,600,000
Cash provided by operating activities	814,400,000	483,100,000	400,900,000
Cash Flows from Investing Activities
Capital expenditures	(52,900,000)	(64,700,000)	(54,700,000)
Acquisitions of businesses, net of cash acquired	77,800,000	(9,100,000)	(32,700,000)
Impact to cash resulting from deconsolidation of subsidiaries	(57,900,000)
Proceeds from the sale of subsidiaries, investments, property and equipment	16,800,000	18,900,000	12,900,000
Cash used in investing activities	(16,200,000)	(54,900,000)	(74,500,000)
Cash Flows from Financing Activities
Net change in short-term borrowings	11,200,000	3,500,000	5,500,000
Proceeds from long-term debt	9,600,000	583,300,000	100,000
Repayments of long-term debt	(1,300,000)	(408,600,000)	(400,000)
Payments for debt issuance costs		(2,500,000)
Payments of contingent consideration for acquisitions	(22,800,000)	(18,600,000)	(13,000,000.0)
Proceeds from share-based awards	7,000,000.0	5,200,000	44,200,000
Payments to noncontrolling interests	(2,100,000)	(1,900,000)	(10,000,000.0)
Other share-based award transactions	(7,200,000)	(17,300,000)	(18,100,000)
Repurchases of common stock	(203,000,000.0)	(500,700,000)	(203,900,000)
Dividends paid	(129,300,000)	(127,300,000)	(123,700,000)
Miscellaneous, net	500,000
Cash used in financing activities	(337,400,000)	(484,900,000)	(319,300,000)
Effect of exchange rate changes on cash	(26,900,000)	(40,400,000)	83,400,000
Change in cash and cash equivalents	433,900,000	(97,100,000)	90,500,000
Cash and cash equivalents, beginning of year	591,900,000	689,000,000.0	598,500,000
Cash and cash equivalents, end of year	1,025,800,000	591,900,000	689,000,000.0
Cash paid during the period for:
Interest	42,400,000	49,900,000	37,000,000.0
Income taxes, net	179,200,000	$ 184,600,000	$ 127,100,000
Operating lease liabilities	150,100,000
Non-cash operating activity:
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 129,300,000

Interest and Other (Income) Expenses, Net (Tables)

12 Months Ended

Dec. 31, 2019

Other Nonoperating Income Expense [Abstract]

Schedule of Interest and Other (Income) Expenses, Net

Interest and other (income) expenses, net consisted of the following:

Year Ended December 31	2019			2018			2017
Interest expense	$	44.4		$	47.0		$	49.4
Interest income		(6.0	)		(6.0	)		(4.8	)
Foreign exchange loss		6.7			1.4			0.8
Miscellaneous (income) expense, net ⁽¹⁾		(85.7	)		(0.4	)		6.5
Interest and other (income) expenses, net	$	(40.6	)	$	42.0		$	51.9

(1) Includes an $80.4 gain related to our acquisition of the remaining controlling interest in Manpower Switzerland. See Note 4 to the Consolidated Financial Statements for further information.

Quarterly Data (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Data (Unaudited)

(16) Quarterly Data (Unaudited)

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
Year Ended December 31, 2019
Revenues from services	$	5,044.9	$	5,373.1	$	5,248.9	$	5,196.6	$	20,863.5
Gross profit		804.8		870.4		840.3		859.6		3,375.1
Operating profit^(a)(b)(d)		105.5		130.8		217.0		191.6		644.9
Net earnings^(a)(b)(c)(d)		53.5		127.3		146.1		138.8		465.7
Net earnings per share - basic	$	0.88	$	2.12	$	2.44	$	2.35	$	7.78
Net earnings per share - diluted^(e)		0.88		2.11		2.42		2.33		7.72
Dividends per share		—		1.09		—		1.09		2.18

Year Ended December 31, 2018
Revenues from services	$	5,522.4	$	5,656.9	$	5,418.7	$	5,393.2	$	21,991.2
Gross profit		885.4		922.7		890.6		880.3		3,579.0
Operating profit^(f)		153.8		208.3		216.7		217.9		796.7
Net earnings^(f)		97.0		143.4		158.0		158.3		556.7
Net earnings per share - basic	$	1.46	$	2.18	$	2.45	$	2.56	$	8.62
Net earnings per share - diluted^(g)		1.45		2.17		2.43		2.54		8.56
Dividends per share		—		1.01		—		1.01		2.02

(a) Included restructuring costs of $39.8, $31.4 net of tax, recorded in the first quarter.

(b) Included goodwill impairment and related charges of $65.6 recorded in selling and administrative expenses and related tax charges of $10.3 recorded in provision for income taxes in the second quarter.

(c) Included gain of $80.4 from the acquisition of the remaining controlling interest in Manpower Switzerland recorded in interest and other (income) expenses, net in the second quarter.

(d) Included gain of $30.4 from the ManpowerGroup Greater China Limited IPO recorded in the third quarter.

(e) Included in the results are restructuring costs per diluted share of $(0.51) for the first quarter, goodwill and related tax and other charges per diluted share of $(1.26) for the second quarter, Manpower Switzerland acquisition gain per diluted share of $1.32 for the second quarter and ManpowerGroup Greater China Limited IPO gain per diluted share of $0.50 for the third quarter.

(f) Included restructuring costs of $24.0, $18.1 net of tax, and $15.3, $11.8 net of tax, recorded in the first and second quarter, respectively.

(g) Included in the results are restructuring costs per diluted share of $(0.27) and $(0.18) for the first and second quarter, respectively.

Net Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Calculations of Net Earnings Per Share - Basic and Diluted

The calculation of net earnings per share - basic and net earnings per share - diluted were as follows:

Year Ended December 31	2019		2018		2017
Net earnings available to common shareholders:	$	465.7	$	556.7	$	545.4
Weighted-average common shares outstanding (in millions):
Weighted-average common shares outstanding - basic		59.9		64.6		67.1
Effect of dilutive securities - stock options		—		0.1		0.2
Effect of other share-based awards		0.4		0.4		0.6
Weighted-average common shares outstanding - diluted		60.3		65.1		67.9
Net earnings per share - basic	$	7.78	$	8.62	$	8.13
Net earnings per share - diluted	$	7.72	$	8.56	$	8.04

Schedule of Antidilutive Securities

The number, exercise prices and weighted-average remaining life of these antidilutive awards were as follows:

	2019		2018		2017
Shares (in thousands)		401		264		—
Exercise price	$	99	$	109	$	—
Weighted-average remaining life	0.9 years		1.2 years			—

Debt

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Debt

(8) Debt

Information concerning short-term borrowings is as follows:

December 31	2019			2018
Short-term borrowings	$	61.0		$	49.9
Weighted-average interest rates		7.7	%		8.4	%

We maintain separate bank credit lines with financial institutions to meet working capital needs of our subsidiary operations. As of December 31, 2019, such uncommitted credit lines totaled $324.1, of which $253.6 was unused. Under our revolving credit agreement, total subsidiary borrowings cannot exceed $300.0 in the first, second and fourth quarters, and $600.0 in the third quarter of each year. Due to these limitations, additional borrowings of $229.5 could have been made under these lines as of December 31, 2019.

A summary of long-term debt is as follows:

December 31	2019		2018
Euro-denominated notes:
€500.0 due June 2026	$	555.8	$	567.8
€400.0 due September 2022		447.1		456.8
Other		9.5		0.9
		1,012.4		1,025.5
Less current maturities		—		0.2
Long-term debt	$	1,012.4	$	1,025.3

Euro Notes

On June 22, 2018, we offered and sold €500.0 aggregate principal amount of the Company’s 1.750% notes due June 2026 (the “€500.0 notes”). The net proceeds from the €500.0 notes of €495.7 were used to repay our €350.0 notes due June 22, 2018, with the remaining balance used for general corporate purposes, which included share repurchases. The €500.0 notes were issued at a price of 99.564% to yield an effective interest rate of 1.809%. Interest on the €500.0 notes is payable in arrears on June 22 of each year. The €500.0 notes are unsecured senior obligations and will rank equally with all of the Company’s existing and future senior unsecured debt and other liabilities.

Our €400.0 aggregate principal amount 1.875% notes (the "€400.0 notes") are due September 2022. When the notes mature, we plan to repay the amounts with available cash, borrowings under our $600.0 revolving credit facility or a new borrowing. The credit terms, including interest rate and facility fees, of any replacement borrowings will be dependent upon the condition of the credit markets at that time. We currently do not anticipate any problems accessing the credit markets should we decide to replace either the €500.0 notes or the €400.0 notes.

Both the €500.0 notes and €400.0 notes contain certain customary non-financial restrictive covenants and events of default and are unsecured senior obligations and rank equally with all of our existing and future senior unsecured debt and other liabilities. These notes have been designated as a hedge of our net investment in subsidiaries with a Euro-functional currency as of December 31, 2019. Since our net investment in these subsidiaries exceeds the respective amount of the designated borrowings, the related translation gains or losses are included as a component of accumulated other comprehensive loss. (See Note 12 to the Consolidated Financial Statements for further information.)

Revolving Credit Agreement

We have a Five Year Credit Agreement with a syndicate of commercial banks with a termination date of June 18, 2023. The Credit Agreement allows for borrowing of $600.0 in various currencies, and up to $150.0 may be used for the issuance of stand-by letters of credit. We had no borrowings under this facility as of both December 31, 2019 and 2018. Outstanding letters of credit issued under the Credit Agreement totaled $0.5 as of both December 31, 2019 and 2018. Additional borrowings of $599.5 were available to us under the facility as of both December 31, 2019 and 2018.

Under the Credit Agreement, a credit ratings-based pricing grid determines the facility fee and the credit spread that we add to the applicable interbank borrowing rate on all borrowings. At our current credit rating, the annual facility fee is 12.5 basis points paid on the entire facility and the credit spread is 100.0 basis points on any borrowings.

The Credit Agreement contains customary restrictive covenants pertaining to our management and operations, including limitations on the amount of subsidiary debt that we may incur and limitations on our ability to pledge assets, as well as financial covenants requiring, among other things, that we comply with a leverage ratio (Net Debt-to-Net Earnings before interest and other expenses, provision for income taxes, intangible asset amortization expense, depreciation and amortization expense ("EBITDA")) of not greater than 3.5 to 1 and a fixed charge coverage ratio of not less than 1.5 to 1. The Credit Agreement also contains customary events of default, including, among others, payment defaults, material inaccuracy of representations and warranties, covenant defaults, bankruptcy or involuntary proceedings, certain monetary and non-monetary judgments, change of control and customary ERISA defaults.

Debt Maturities

The maturities of long-term debt payable within each of the four years subsequent to December 31, 2020 are as follows: 2021 - $0.1, 2022 - $454.5, 2023 - $2.0, 2024 - $0.0.

Schedule II VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2019

Valuation And Qualifying Accounts [Abstract]

Schedule II VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—Valuation and Qualifying Accounts

For the years ended December 31, 2019, 2018 and 2017, in millions:

Allowance for Doubtful Accounts:

	Balance at Beginning of Year		Provisions Charged to Earnings		Write-Offs			Translation Adjustments			Reclassifications and Other			Balance at End of Year
2019	$	115.7	$	21.8	$	(19.1	)	$	(5.0	)	$	0.1		$	113.5
2018		110.8		23.0		(12.0	)		(6.3	)		0.2			115.7
2017		98.2		18.1		(17.6	)		12.4			(0.3	)		110.8

Goodwill

12 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

(7) Goodwill

Changes in the carrying value of goodwill by reportable segment and Corporate were as follows:

	Americas⁽¹⁾			Southern Europe⁽²⁾			Northern Europe			APME			Right Management		Corporate⁽³⁾			Total⁽⁴⁾
Balance, January 1, 2018	$	519.2		$	121.9		$	468.1		$	106.2		$	62.1	$	65.5		$	1,343.0
Goodwill acquired		4.6			—			—			1.5			—		—			6.1
Goodwill allocated to business units sold		—			—			(8.8	)		—			—		—			(8.8	)
Currency impact and other		(3.9	)		(9.7	)		(23.9	)		(5.7	)		—		—			(43.2	)
Balance, December 31, 2018		519.9			112.2			435.4			102.0			62.1		65.5			1,297.1
Goodwill acquired		14.2			33.8			—			—			—		—			48.0
Goodwill allocated to business units deconsolidated⁽⁵⁾		—			—			—			(18.5	)		—		(1.6	)		(20.1	)
Impairment charge⁽⁶⁾		—			—			(60.2	)		(3.8	)		—		—			(64.0	)
Currency impact and other		1.5			(1.2	)		(0.6	)		(0.6	)		—		—			(0.9	)
Balance, December 31, 2019	$	535.6		$	144.8		$	374.6		$	79.1		$	62.1	$	63.9		$	1,260.1

(1) Balances related to United States were $476.5 as of January 1, 2018 and December 31, 2018, respectively, and $490.3 as of December 31, 2019.

(5) Reductions relate to our China and Hong Kong reporting units, which were deconsolidated as of July 10, 2019. See Note 4 to the Consolidated Financial Statements for further information.

Goodwill balances by reporting unit were as follows:

December 31	2019		2018
United States	$	545.8	$	532.0
Netherlands		109.5		112.0
United Kingdom		97.3		93.7
France		67.3		68.9
Germany		67.2		129.2
Right Management		62.1		62.1
Other reporting units		310.9		299.2
Total goodwill	$	1,260.1	$	1,297.1

Leases

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases

(13) Leases

The components of lease expense were as follows:

	Year Ended
	December 31, 2019
Operating lease expense	$	153.5
Short-term lease expense		17.6
Other lease expense⁽¹⁾		15.8
Total lease expense	$	186.9

(1) Other lease expense includes variable lease expense and sublease income.

Other information related to leases was as follows:

	December 31,
Supplemental Balance Sheet Information	2019
Operating Leases

Operating lease ROU assets	$	448.5

Operating lease liabilities - current⁽¹⁾	$	122.1
Operating lease liabilities - long-term		336.7
Total operating lease liabilities	$	458.8

(1) Operating lease liabilities - current are included in accrued expenses on our Consolidated Balance Sheets.

Weighted Average Remaining Lease Term
Operating leases	5.6 years
Weighted Average Discount Rate
Operating leases		3.1	%

Maturities of operating lease liabilities as of December 31, 2019 were as follows:

(In millions)
Period Ending December 31, 2019	Operating Leases
2020	$	133.8
2021		102.7
2022		78.7
2023		54.1
2024		38.6
Thereafter		96.0
Total future undiscounted lease payments	$	503.9
Less imputed interest	$	(45.1	)
Total operating lease liabilities	$	458.8

Maturities of operating leases accounted for under ASC 840 as liabilities as of December 31, 2018 were as follows:

(In millions)
Period Ending December 31, 2018	Operating Leases
2019	$	151.4
2020		115.2
2021		85.5
2022		65.0
2023		44.1
Thereafter		105.6
Total minimum lease payments	$	566.8

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive (loss) income:
Income tax expense (benefit) on translation adjustments on derivative instruments	$ 3.8	$ 10.2	$ (34.3)
Income tax expense (benefit) on unrealized gain (loss) on investments			(0.8)
Income tax expense on defined benefit pension plans and retiree health care plan	$ (8.1)	$ 4.6	$ (0.1)

Share-Based Compensation Plans - Performance Share Units (Details) - Performance Shares - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Payout Levels (in units):
Threshold Award (in shares)	68,132	47,003	57,563	65,141
Target Award (in shares)	136,264	94,005	115,125	130,282
Outstanding Award (in shares)	272,528	188,010	230,250	260,564
Shares Issued (in shares)				125,070
Payout Achieved Over Performance Period			88,377

Debt - Schedule of Short-Term Borrowings (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Short-term borrowings	$ 61.0	$ 49.9
Weighted-average interest rates	7.70%	8.40%

Net Earnings Per Share - Additional Information (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-Based Awards
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from the calculation of net earnings per share - diluted (in shares)	401,000	264,000	0

Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Accumulated Other Comprehensive Loss

(10) Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss, net of tax, were as follows:

December 31	2019			2018
Foreign currency translation	$	(260.5	)	$	(223.2	)
Translation gain (loss) on derivative instruments, net of income taxes of $(9.1) and $(12.9), respectively		13.1			(4.7	)
Translation loss on long-term intercompany loans		(121.5	)		(137.2	)
Defined benefit pension plans, net of income taxes of $(30.9) and $(23.2), respectively		(74.1	)		(37.9	)
Retiree health care plan, net of income taxes of $1.6 and $2.0, respectively		2.0			3.2
Accumulated other comprehensive loss	$	(441.0	)	$	(399.8	)

Acquisitions and Dispositions - Schedule of Preliminary Allocation of Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Apr. 03, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 1,260.1		$ 1,297.1	$ 1,343.0
Southern Europe
Business Acquisition [Line Items]
Cash and cash equivalents		$ 317.5
Accounts receivable		60.4
Prepaid expenses and other assets		31.4
Goodwill		33.8
Intangible assets subject to amortization, customer relationship		19.6
Intangible assets not subject to amortization, reacquired franchise rights		25.5
Property and equipment		0.4
Accounts payable		(21.6)
Employee compensation payable		(2.5)
Accrued liabilities		(9.9)
Accrued payroll taxes and insurance		(7.5)
Value added taxes payable		(7.4)
Other long-term liabilities		(24.6)
Total assets and liabilities		$ 415.1

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Changes in Restructuring Reserve

Changes in the restructuring reserve by reportable segment and Corporate are shown below:

	Americas⁽¹⁾			Southern Europe⁽²⁾			Northern Europe			APME			Right Management			Corporate			Total
Balance, December 31, 2017	$	1.7		$	0.9		$	9.6		$	—		$	1.2		$	0.1		$	13.5
Severance costs		0.3			5.4			25.8			—			0.3			—			31.8
Office closure costs		—			—			7.5			—			—			—			7.5
Costs paid or utilized		(1.7	)		(4.6	)		(29.8	)		—			(1.1	)		(0.1	)		(37.3	)
Balance, December 31, 2018	$	0.3		$	1.7		$	13.1		$	—		$	0.4		$	—		$	15.5
Severance costs		3.6			5.2			17.6			3.5			0.2			2.3			32.4
Office closure costs⁽³⁾		1.3			0.1			2.0			0.9			4.5			0.8			9.6
Costs paid, utilized or transferred out⁽³⁾		(4.8	)		(6.3	)		(26.5	)		(4.4	)		(5.1	)		(3.1	)		(50.2	)
Balance, December 31, 2019	$	0.4		$	0.7		$	6.2		$	—		$	—		$	—		$	7.3

(1) Balance related to United States was $1.5 as of December 31, 2017. In 2018, United States paid/utilized $1.2, leaving a $0.3 liability as of December 31, 2018. In 2019, United States incurred $1.1 for severance costs and $1.3 for office closure costs and paid/utilized $2.4, leaving a $0.3 liability as of December 31, 2019.

(2) Balance related to France was $0.9 as of both December 31, 2017 and 2018. In 2019, France paid/utilized $0.9, leaving no liability as of December 31, 2019. Italy had no restructuring reserves recorded as of December 31, 2017. In 2018, Italy incurred $1.9 for severance costs and paid/utilized $1.4, leaving a $0.5 liability as of December 31, 2018. In 2019, Italy incurred $2.3 for severance costs and paid/utilized $2.5, leaving a $0.3 liability as of December 31, 2019.

(3) The office closure costs of $9.6 were recorded as an impairment to the operating lease right-of-use asset and, thus, are not included in the restructuring reserve balance as of December 31, 2019. As of December 31, 2019, the remaining liability of $3.2 related to office closures is recorded in current operating lease liabilities.

Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis

The assets and liabilities measured and recorded at fair value on a recurring basis were as follows:

	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Deferred compensation plan assets	$	107.3	$	107.3	$	—	$	—	$	89.5	$	89.5	$	—	$	—
Cross-currency swaps		9.7		—		9.7		—		—		—		—		—
Foreign currency forward contracts		—		—		—		—		0.1		—		0.1		—
	$	117.0	$	107.3	$	9.7	$	—	$	89.6	$	89.5	$	0.1	$	—
Liabilities
Cross-currency swaps	$	6.0	$	—	$	6.0	$	—	$	—	$	—	$	—	$	—
Foreign currency forward contracts		—		—		—		—		0.1		—		0.1		—
	$	6.0	$	—	$	6.0	$	—	$	0.1	$	—	$	0.1	$	—

Schedule of Goodwill, Finite-Lived Intangible Assets and Indefinite-Lived Intangible Assets

We had goodwill, finite-lived intangible assets and indefinite-lived intangible assets as follows:

	December 31, 2019						December 31, 2018
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Goodwill⁽¹⁾	$	1,260.1	$	—	$	1,260.1	$	1,297.1	$	—	$	1,297.1
Intangible assets:
Finite-lived:
Customer relationships	$	460.5	$	375.7	$	84.8	$	444.8	$	351.7	$	93.1
Other		20.9		13.7		7.2		18.5		16.0		2.5
		481.4		389.4		92.0		463.3		367.7		95.6
Indefinite-lived:
Tradenames⁽²⁾		52.0		—		52.0		52.0		—		52.0
Reacquired franchise rights		124.6		—		124.6		98.7		—		98.7
		176.6		—		176.6		150.7		—		150.7
Total intangible assets	$	658.0	$	389.4	$	268.6	$	614.0	$	367.7	$	246.3

(1) Balances were net of accumulated impairment loss of $577.4 and $513.4 as of December 31, 2019 and 2018, respectively.

(2) Balances were net of accumulated impairment loss of $139.5 as of both December 31, 2019 and 2018.

Summary of Property and Equipment

A summary of property and equipment as of December 31 is as follows:

	2019		2018
Land	$	0.5	$	3.4
Buildings		10.2		12.0
Furniture, fixtures, and autos		164.8		167.3
Computer equipment		130.3		128.7
Leasehold improvements		299.7		302.2
Property and equipment	$	605.5	$	613.6

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Stockholders Equity [Abstract]
Dividends per share (in dollars per share)	$ 1.09	$ 0	$ 1.09	$ 0	$ 1.01	$ 0	$ 1.01	$ 0	$ 2.18	$ 2.02	$ 1.86

Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenues from services	$ 5,196.6	$ 5,248.9	$ 5,373.1	$ 5,044.9	$ 5,393.2	$ 5,418.7	$ 5,656.9	$ 5,522.4	$ 20,863.5	$ 21,991.2	$ 21,034.3
Gross profit	859.6	840.3	870.4	804.8	880.3	890.6	922.7	885.4	3,375.1	3,579.0	3,484.6
Operating profit	191.6	217.0	130.8	105.5	217.9	216.7	208.3	153.8	644.9	796.7	789.2
Net earnings	$ 138.8	$ 146.1	$ 127.3	$ 53.5	$ 158.3	$ 158.0	$ 143.4	$ 97.0	$ 465.7	$ 556.7	$ 545.4
Net earnings per share - basic (in dollars per share)	$ 2.35	$ 2.44	$ 2.12	$ 0.88	$ 2.56	$ 2.45	$ 2.18	$ 1.46	$ 7.78	$ 8.62	$ 8.13
Net earnings per share - diluted (in dollars per share)	2.33	2.42	2.11	0.88	2.54	2.43	2.17	1.45	7.72	8.56	8.04
Dividends per share (in dollars per share)	$ 1.09	$ 0	$ 1.09	$ 0	$ 1.01	$ 0	$ 1.01	$ 0	$ 2.18	$ 2.02	$ 1.86

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

Revenue Recognition

12 Months Ended

Dec. 31, 2019

Revenue From Contract With Customer [Abstract]

Revenue Recognition

(2) Revenue Recognition

Revenue Service Types

The following is a description of our revenue service types, including Staffing and Interim, Outcome-Based Solutions and Consulting, Permanent Recruitment and Other services.

Staffing and Interim

Staffing and Interim services include the augmentation of clients’ workforce with our contingent employees performing services under the client’s supervision, which provides our clients with a source of flexible labor. Staffing and Interim client contracts are generally short-term in nature, and we generally enter into contracts that include only a single performance obligation. We recognize revenues over time based on a fixed amount for each hour of Staffing and Interim service provided as our clients benefit from our services as we provide them.

Outcome-Based Solutions and Consulting

Our Outcome-Based Solutions and Consulting services include utilizing consultants and contingent employees who are generally experts in a specific field advising the client to help find strategic solutions to specific matters or achieve a particular outcome. Our services may also include managing certain processes and functions within the client’s organization. We recognize revenues over time based on (i) our clients benefiting from our services as we are providing them, (ii) our clients controlling an asset as it is created or enhanced, or (iii) our performance not creating an asset with an alternative use and having an enforceable right to payment for the services we have provided to date. We generally utilize an input measure of time for the service provided, which most accurately depicts the progress toward completion of these performance obligations. The price as specified in our client contracts is generally considered the standalone selling price as it is an observable input that depicts the price as if sold to a similar client in similar circumstances.

Permanent Recruitment

Permanent Recruitment services include providing qualified candidates to our clients to hire on a permanent basis. We recognize revenues for our Permanent Recruitment services at a point in time when we place the qualified candidate, because we have determined that control of the performance obligation has transferred to the client (i.e., service performed) as we have the right to payment for our service and the client has accepted our service of providing a qualified candidate to fill a permanent position. Revenues recognized from our Permanent Recruitment services are based upon either a fixed fee per placement or as a percentage of the candidate’s salary.

Our RPO services are also included in our Permanent Recruitment revenues. RPO services include the various activities of managing a client's permanent workforce, which can include candidate assessments, screening, conducting candidate interviews, providing sourcing technology, and providing our marketing and recruiting expertise. We perform these activities to fulfill the overall obligation to provide permanent workforce management services, so they are not individually distinct and, therefore, we account for them as a single performance obligation. We generally utilize an input measure of time in months, but we do have a few contracts for which we use labor hours of management services provided as this more accurately depicts the progress toward completion of the performance obligation. We recognize revenues over time for each month of management services provided, as each month of management services is distinct and the client benefits from each month of management services as we provide them. For those contracts for which we use labor hours as the input measure, we recognize revenues over time based on a fixed amount for each labor hour of management services provided as our clients benefit from our services as we provide them.

We consider the RPO management services and placement services to be distinct and, therefore, separate performance obligations within our RPO contracts as (i) our clients can benefit from each service on its own, and (ii) each service is separately identifiable within the client contract. The prices as specified in our contracts will generally be broken out between management fees and placement fees, which we consider the standalone selling price of each service as they are the observable inputs which depict the prices as if they were sold to a similar client in similar circumstances. The consideration from our client contracts is allocated to each performance obligation based on the relative standalone selling price.

Other Services

Other services include revenues from outplacement services, MSP services, training services and franchise fees.

•

Outplacement services include assisting our clients in managing their workforce transitions and their employees in managing career changes by developing additional skills and finding new employment. We recognize revenues over time as we provide the service (i.e., transfer control of the performance obligation) using the input measure of hours of service to measure progress toward completion of the performance obligation.

•

MSP services include overall program management of our clients’ contingent workforce and generally include various activities such as reporting and tracking, supplier selection and management and order distribution, depending on each client contract. We provide these services to fulfill the overall obligation of contingent workforce management services so the individual activities are not distinct and therefore we account for them as a single performance obligation. We recognize revenues over time for each month of MSP services provided, as each month of MSP services is distinct and the client benefits from each month of MSP services as we provide them.

•

Training services include teaching skills that relate to specific competencies in order for our client’s workforce to acquire knowledge and develop skills proficiencies. We recognize revenues over time for each hour of training service provided as our clients benefit from our services as we provide them.

•

Our franchise fees include the performance obligation of providing the right to use our intellectual property in a specifically defined exclusive territory as defined in a franchise agreement. Our franchise agreements generally state that franchise fees are calculated based on a percentage of revenues earned by the franchise operations and are payable on a monthly basis. As such, we record franchise fee revenues monthly over time calculated based on the specific fee percentage and the monthly revenues of the franchise operations. Franchise fees were $18.4, $24.1 and $23.7 for the years ended December 31, 2019, 2018 and 2017, respectively.

Disaggregation of Revenues

In the following table, revenue is disaggregated by service types and timing of revenue recognition and includes a reconciliation of the disaggregated revenues by reportable segment.

	Year Ended December 31,
	2019										2018
	Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total		Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total
Americas:
United States	$	2,186.8	$	130.9	$	98.0	$	91.3	$	2,507.0	$	2,208.3	$	129.7	$	92.9	$	91.4	$	2,522.3
Other Americas		1,596.6		49.0		25.4		4.3		1,675.3		1,561.1		47.2		24.7		4.0		1,637.0
		3,783.4		179.9		123.4		95.6		4,182.3		3,769.4		176.9		117.6		95.4		4,159.3
Southern Europe:
France		5,159.5		232.4		52.1		15.7		5,459.7		5,526.5		224.7		54.9		21.6		5,827.7
Italy		1,401.9		44.6		37.6		22.4		1,506.5		1,565.6		48.4		35.9		20.7		1,670.6
Other Southern Europe		1,800.7		332.3		58.9		8.3		2,200.2		1,496.4		306.2		54.8		15.9		1,873.3
		8,362.1		609.3		148.6		46.4		9,166.4		8,588.5		579.3		145.6		58.2		9,371.6
Northern Europe		4,180.9		332.3		145.7		32.4		4,691.3		4,746.3		426.2		164.4		33.6		5,370.5
APME		2,159.7		294.7		159.8		13.0		2,627.2		2,394.0		284.9		196.3		15.1		2,890.3
Right Management		—		46.2		—		150.1		196.3		—		49.9		—		149.6		199.5
Total	$	18,486.1	$	1,462.4	$	577.5	$	337.5	$	20,863.5	$	19,498.2	$	1,517.2	$	623.9	$	351.9	$	21,991.2

	Year Ended December 31,
	2019						2018
	Services transferred over time		Services transferred at a point in time		Total		Services transferred over time		Services transferred at a point in time		Total
Americas:
United States	$	2,453.1	$	53.9	$	2,507.0	$	2,471.0	$	51.3	$	2,522.3
Other Americas		1,657.9		17.4		1,675.3		1,619.7		17.3		1,637.0
		4,111.0		71.3		4,182.3		4,090.7		68.6		4,159.3
Southern Europe:
France		5,410.9		48.8		5,459.7		5,775.1		52.6		5,827.7
Italy		1,471.8		34.7		1,506.5		1,637.1		33.5		1,670.6
Other Southern Europe		2,151.3		48.9		2,200.2		1,827.7		45.6		1,873.3
		9,034.0		132.4		9,166.4		9,239.9		131.7		9,371.6
Northern Europe		4,564.5		126.8		4,691.3		5,229.1		141.4		5,370.5
APME		2,526.3		100.9		2,627.2		2,758.3		132.0		2,890.3
Right Management		196.3		—		196.3		199.5		—		199.5
Total	$	20,432.1	$	431.4	$	20,863.5	$	21,517.5	$	473.7	$	21,991.2

Acquisitions and Dispositions - Additional Information (Details) $ in Millions					1 Months Ended	3 Months Ended		12 Months Ended
	Aug. 07, 2019	Jul. 10, 2019	Jul. 09, 2019	Apr. 03, 2019 USD ($)	Dec. 31, 2018 USD ($) business_unit	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2019
Business Acquisition [Line Items]
Percentage interest acquired											51.00%
Business combination, net of cash acquired								$ (77.8)	$ 9.1	$ 32.7
Intangible assets					$ 246.3			268.6	246.3
Goodwill					$ 1,297.1			1,260.1	1,297.1	1,343.0
Net revenues from services since the acquisition								337.7
Total cash consideration paid for acquisitions, net of cash acquired								47.7	51.8	45.7
Total contingent consideration payments for acquisitions									42.7
Payment for contingent consideration liability, financing activities								13.0	18.6	13.0
Goodwill acquired during the period								48.0	6.1
Intangible assets acquired during the period									0.7
Non-cash gain on deconsolidation								$ 30.4
Disposed of by Sale \| Netherlands Business Unit
Business Acquisition [Line Items]
Number of business units sold \| business_unit					1
After tax net gain					$ 3.8
Customer relationships
Business Acquisition [Line Items]
Intangible asset amortized useful life								14 years
Manpower Switzerland
Business Acquisition [Line Items]
Percentage interest acquired				51.00%
Cash consideration for acquisitions				$ 219.5
Acquired interests				58.3
Cash and cash equivalents				161.2
Aggregate of consideration paid and fair value of previously held equity interest				415.1
Business combination, net of cash acquired				97.6
Reclassification of foreign currency translation adjustments related to previously held equity interest				32.5				$ 32.5
Intangible assets								44.5
Goodwill								$ 34.2
Manpower Switzerland \| Customer relationships
Business Acquisition [Line Items]
Intangible asset amortized useful life								15 years
Manpower Switzerland \| Interest and Other Expenses (Income), Net
Business Acquisition [Line Items]
Non-cash gain on disposition of previously held equity interest				$ 80.4			$ 80.4	$ 80.4	$ 80.4	80.4
Experis AG
Business Acquisition [Line Items]
Percentage interest acquired				20.00%
7S
Business Acquisition [Line Items]
Payment for contingent consideration liability, financing activities										$ 10.3
2019 Acquisitions Excluding Manpower Switzerland
Business Acquisition [Line Items]
Goodwill acquired during the period								14.2
Intangible assets acquired during the period								9.0
ManpowerGroup Greater China Limited
Business Acquisition [Line Items]
Reclassification of foreign currency translation adjustments related to previously held equity interest								$ (6.2)
Percentage of diluted ownership interest, description								36.87% as the underwriters exercised their overallotment option in full
Non-cash gain on deconsolidation						$ 30.4
Foreign currency translation adjustment								$ 6.2
ManpowerGroup Greater China Limited \| APME
Business Acquisition [Line Items]
Percentage of controlling interest			51.00%
ManpowerGroup Greater China Limited \| Initial Public Offering
Business Acquisition [Line Items]
Percentage of shares issued in equity		25.00%
Percentage of diluted ownership interest		38.25%
Percentage of diluted ownership interest, if underwriter exercises of overallotment option in full	36.87%
ManpowerGroup Greater China Limited \| Selling and Administrative Expenses
Business Acquisition [Line Items]
Non-cash gain on deconsolidation								$ 30.4

Interest and Other (Income) Expenses, Net - Schedule of Interest and Other (Income) Expenses, Net (Parenthetical) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Apr. 03, 2019	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Manpower Switzerland \| Interest and Other Expenses (Income), Net
Other Non Operating Income Expense [Line Items]
Gain on acquisition of remaining controlling interest	$ 80.4	$ 80.4	$ 80.4	$ 80.4	$ 80.4

Summary of Significant Accounting Policies - Schedule of Changes in Restructuring Reserve (Parenthetical) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	$ 15,500,000	$ 13,500,000
Severance costs	32,400,000	31,800,000
Office closure costs	9,600,000	7,500,000
Costs paid or utilized	50,200,000	37,300,000
Balance at end of year	7,300,000	15,500,000
Operating Lease Right-of-Use Asset
Restructuring Cost and Reserve [Line Items]
Office closure costs	9,600,000
Operating Lease Liabilities, Current
Restructuring Cost and Reserve [Line Items]
Office closure costs	3,200,000
Americas \| United States
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	300,000	1,500,000
Severance costs	1,100,000
Office closure costs	1,300,000
Costs paid or utilized	2,400,000	1,200,000
Balance at end of year	300,000	300,000
Southern Europe \| France
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	900,000	900,000
Costs paid or utilized	900,000
Balance at end of year	0	900,000
Southern Europe \| Italy
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	500,000	0
Severance costs	2,300,000	1,900,000
Office closure costs	2,500,000
Costs paid or utilized	$ 300,000	1,400,000
Balance at end of year		$ 500,000

Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue

In the following table, revenue is disaggregated by service types and timing of revenue recognition and includes a reconciliation of the disaggregated revenues by reportable segment.

	Year Ended December 31,
	2019										2018
	Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total		Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total
Americas:
United States	$	2,186.8	$	130.9	$	98.0	$	91.3	$	2,507.0	$	2,208.3	$	129.7	$	92.9	$	91.4	$	2,522.3
Other Americas		1,596.6		49.0		25.4		4.3		1,675.3		1,561.1		47.2		24.7		4.0		1,637.0
		3,783.4		179.9		123.4		95.6		4,182.3		3,769.4		176.9		117.6		95.4		4,159.3
Southern Europe:
France		5,159.5		232.4		52.1		15.7		5,459.7		5,526.5		224.7		54.9		21.6		5,827.7
Italy		1,401.9		44.6		37.6		22.4		1,506.5		1,565.6		48.4		35.9		20.7		1,670.6
Other Southern Europe		1,800.7		332.3		58.9		8.3		2,200.2		1,496.4		306.2		54.8		15.9		1,873.3
		8,362.1		609.3		148.6		46.4		9,166.4		8,588.5		579.3		145.6		58.2		9,371.6
Northern Europe		4,180.9		332.3		145.7		32.4		4,691.3		4,746.3		426.2		164.4		33.6		5,370.5
APME		2,159.7		294.7		159.8		13.0		2,627.2		2,394.0		284.9		196.3		15.1		2,890.3
Right Management		—		46.2		—		150.1		196.3		—		49.9		—		149.6		199.5
Total	$	18,486.1	$	1,462.4	$	577.5	$	337.5	$	20,863.5	$	19,498.2	$	1,517.2	$	623.9	$	351.9	$	21,991.2

	Year Ended December 31,
	2019						2018
	Services transferred over time		Services transferred at a point in time		Total		Services transferred over time		Services transferred at a point in time		Total
Americas:
United States	$	2,453.1	$	53.9	$	2,507.0	$	2,471.0	$	51.3	$	2,522.3
Other Americas		1,657.9		17.4		1,675.3		1,619.7		17.3		1,637.0
		4,111.0		71.3		4,182.3		4,090.7		68.6		4,159.3
Southern Europe:
France		5,410.9		48.8		5,459.7		5,775.1		52.6		5,827.7
Italy		1,471.8		34.7		1,506.5		1,637.1		33.5		1,670.6
Other Southern Europe		2,151.3		48.9		2,200.2		1,827.7		45.6		1,873.3
		9,034.0		132.4		9,166.4		9,239.9		131.7		9,371.6
Northern Europe		4,564.5		126.8		4,691.3		5,229.1		141.4		5,370.5
APME		2,526.3		100.9		2,627.2		2,758.3		132.0		2,890.3
Right Management		196.3		—		196.3		199.5		—		199.5
Total	$	20,432.1	$	431.4	$	20,863.5	$	21,517.5	$	473.7	$	21,991.2

Segment Data - Schedule of Segment Data (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenues from services	$ 5,196.6	$ 5,248.9	$ 5,373.1	$ 5,044.9	$ 5,393.2	$ 5,418.7	$ 5,656.9	$ 5,522.4	$ 20,863.5	$ 21,991.2	$ 21,034.3
Franchise fees
Segment Reporting Information [Line Items]
Revenues from services									18.4	24.1	23.7
Americas
Segment Reporting Information [Line Items]
Revenues from services									4,182.3	4,159.3	4,216.4
Americas \| United States
Segment Reporting Information [Line Items]
Revenues from services									2,507.0	2,522.3	2,659.0
Americas \| United States \| Franchise fees
Segment Reporting Information [Line Items]
Revenues from services									$ 14.1	$ 15.0	$ 14.8

Share-Based Compensation Plans - Summary of Restricted Stock Activity (Details) - Restricted Stock - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shares
Unvested at beginning of period (in shares)	396	448	451
Granted (in shares)	236	145	167
Vested (in shares)	(150)	(174)	(133)
Forfeited (in shares)	(36)	(23)	(37)
Unvested at end of period (in shares)	446	396	448	451
Wtd. Avg.Price Per Share
Unvested at beginning of period (in dollars per share)	$ 92	$ 77	$ 70
Granted (in dollars per share)	84	119	98
Vested (in dollars per share)	76	77	79
Forfeited (in dollars per share)	93	89	80
Unvested at end of period (in dollars per share)	$ 97	$ 92	$ 77	$ 70
Equity Other Than Options, Additional [Abstract]
Unvested (in years)	1 year 6 months	1 year 3 months 18 days	1 year 2 months 12 days	1 year 4 months 24 days
Unvested, aggregate intrinsic value	$ 43

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses for the reporting period. Actual results could differ from these estimates.

Basis of Consolidation

The Consolidated Financial Statements include our operating results and the operating results of all of our majority-owned subsidiaries and entities in which we have a controlling financial interest. We have a controlling financial interest if we own a majority of the outstanding voting common stock and the noncontrolling shareholders do not have substantive participating rights, or we have significant control over an entity through contractual or economic interests in which we are the primary beneficiary. We account for equity investments in companies over which we have the ability to exercise significant influence, but not control, using the equity method of accounting. We recognize our ownership share of earnings of these equity method investments, amortization of basis differences, and related gains or losses in the Consolidated Financial Statements. These investments, as well as certain other relationships, are also evaluated for consolidation under the accounting guidance on consolidation of variable interest entities. These investments were $97.8 and $161.4 as of December 31, 2019 and 2018, respectively, and are included in other assets in the Consolidated Balance Sheets. Included in shareholders’ equity as of December 31, 2019 and 2018 are $3.4 and $105.2, respectively, of unremitted earnings from investments accounted for using the equity method. The decreases in the amounts above relate to our acquisition of the remaining controlling interest in our Swiss franchise. The remaining amounts as of December 31, 2019 relate to accounting for our remaining interest in ManpowerGroup Greater China under the equity method subsequent to deconsolidation (see Note 4 for further information). All significant intercompany accounts and transactions have been eliminated in consolidation.

Revenues

As of January 1, 2018, we adopted the new accounting guidance on revenue recognition using the modified retrospective approach applied to those contracts that were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under the new guidance, while prior periods continue to be reported in accordance with previous accounting guidance. We determined that no cumulative effect adjustment to retained earnings was necessary upon adoption as there were no significant revenue recognition differences identified between the new and previous accounting guidance.

We recognize revenues when control of the promised services is transferred to our clients, in an amount that reflects the consideration we expect to be entitled to receive in exchange for those services. Our revenues are recorded net of any sales, value added, or other taxes collected from our clients.

A performance obligation is a promise in a contract to transfer a distinct service to the client, and it is the unit of account in the new accounting guidance for revenue recognition. The majority of our contracts have a single performance obligation as the promise to transfer the individual services is not separately identifiable from other promises in our contracts and, therefore, is not distinct. However, we have multiple performance obligations within our Recruitment Process Outsourcing (RPO) contracts as discussed below. For performance obligations that we satisfy over time, revenues are recognized by consistently applying a method of measuring progress toward satisfaction of that performance obligation. We generally utilize an input measure of time (e.g., hours, weeks, months) of service provided, which most accurately depicts the progress toward completion of each performance obligation.

We generally determine standalone selling prices based on the prices included in the client contracts, using expected costs plus margin, or other observable prices. The price as specified in our client contracts is generally considered the standalone selling price as it is an observable input that depicts the price as if sold to a similar client in similar circumstances. Certain client contracts have variable consideration, including credits, sales allowances, rebates or other similar items that generally reduce the transaction price. We estimate variable consideration using whichever method, either the expected value method or most likely amount method, better predicts the amount of consideration to which we will become entitled based on the terms of the client contract and historical evidence. These amounts may be constrained and are only included in revenues to the extent we do not expect a significant reversal when the uncertainty associated with the variable consideration is resolved. Our variable consideration amounts are not material, and we do not believe that there will be significant changes to our estimates.

Our client contracts generally include standard payment terms acceptable in each of the countries and territories in which we operate. The payment terms vary by the type and location of our clients and services offered. Client payments are typically due approximately 60 days after invoicing but may be a shorter or longer term depending on the contract. Our client contracts are generally short-term in nature with a term of one year or less. The timing between satisfaction of the performance obligation, invoicing and payment is not significant. For certain services and client types, we may require payment prior to delivery of services to the client, for which deferred revenue is recorded.

In certain scenarios where a third-party vendor is involved in our revenue transactions with our clients, we evaluate whether we are the principal or the agent in the transaction. In situations where we act as principal in the transaction, we control the performance obligation prior to transfer to the client, and we report the related amounts as gross revenues and cost of services. When we act as agent in the transaction, we do not control the performance obligation prior to transfer to the client, and we report the related amounts as revenues on a net basis. A majority of these agent transactions occur within our TAPFIN - Managed Service Provider (MSP) programs where our performance obligation is to manage our client’s contingent workforce, and we earn a commission based on the amount of staffing services that are managed through the program. We are the agent in these transactions as we do not control the third-party providers' staffing services provided to the client through our MSP program prior to those services being transferred to the client.

For certain client contracts where we recognize revenues over time, we recognize the amount that we have the right to invoice, which corresponds directly to the value provided to the client of our performance to date.

As allowed under the new guidance, we do not disclose the amount of unsatisfied performance obligations for client contracts with an original expected length of one year or less and those client contracts for which we recognize revenues at the amount to which we have the right to invoice for services performed. We have other contracts with revenues expected to be recognized subsequent to December 31, 2019 related to remaining performance obligations, which are not material.

Accounts Receivable, Contract Assets and Contract Liabilities

We record accounts receivable when our right to consideration becomes unconditional. Contract assets primarily relate to our rights to consideration for services provided that they are conditional on satisfaction of future performance obligations. We record contract liabilities (deferred revenue) when payments are made or due prior to the related performance obligations being satisfied. The current portion of our contract liabilities is included in accrued liabilities in our Consolidated Balance Sheets. We do not have any material contract assets or long-term contract liabilities.

Our deferred revenue was $44.5 at December 31, 2019 and $42.8 at December 31, 2018. We recognized the entire amount of the deferred revenue balance as of December 31, 2018 as revenue during the year ended December 31, 2019.

Allowance for Doubtful Accounts

We have an allowance for doubtful accounts recorded as an estimate of the accounts receivable balance that may not be collected. This allowance is calculated on an entity-by-entity basis with consideration for historical write-off experience, the current aging of receivables and a specific review for potential bad debts. Items that affect this balance mainly include bad debt expense and the write-off of accounts receivable balances.

Bad debt expense is recorded as selling and administrative expenses in our Consolidated Statements of Operations and was $21.8, $23.0 and $18.1 in 2019, 2018 and 2017, respectively. Factors that would cause this provision to increase primarily relate to increased bankruptcies by our clients and other difficulties collecting amounts billed. On the other hand, an improved write-off experience and aging of receivables would result in a decrease to the provision. Write-offs were $19.1, $12.0 and $17.6 for 2019, 2018 and 2017, respectively.

Advertising Costs

We expense production costs of advertising as they are incurred. Advertising expenses were $25.7, $27.9 and $26.6 in 2019, 2018 and 2017, respectively.

Restructuring Costs

We recorded net restructuring costs of $42.0, $39.3 and $34.5 in 2019, 2018 and 2017, respectively, in selling and administrative expenses, primarily related to severances and office closures and consolidations in multiple countries and territories. The costs paid, utilized or transferred out of our restructuring reserve was $50.2 and $37.3 in 2019 and 2018, respectively. We expect a majority of the remaining $7.3 reserve will be paid by the end of 2020. Changes in the restructuring reserve by reportable segment and Corporate are shown below:

	Americas⁽¹⁾			Southern Europe⁽²⁾			Northern Europe			APME			Right Management			Corporate			Total
Balance, December 31, 2017	$	1.7		$	0.9		$	9.6		$	—		$	1.2		$	0.1		$	13.5
Severance costs		0.3			5.4			25.8			—			0.3			—			31.8
Office closure costs		—			—			7.5			—			—			—			7.5
Costs paid or utilized		(1.7	)		(4.6	)		(29.8	)		—			(1.1	)		(0.1	)		(37.3	)
Balance, December 31, 2018	$	0.3		$	1.7		$	13.1		$	—		$	0.4		$	—		$	15.5
Severance costs		3.6			5.2			17.6			3.5			0.2			2.3			32.4
Office closure costs⁽³⁾		1.3			0.1			2.0			0.9			4.5			0.8			9.6
Costs paid, utilized or transferred out⁽³⁾		(4.8	)		(6.3	)		(26.5	)		(4.4	)		(5.1	)		(3.1	)		(50.2	)
Balance, December 31, 2019	$	0.4		$	0.7		$	6.2		$	—		$	—		$	—		$	7.3

Income Taxes

We account for income taxes in accordance with the accounting guidance on income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and net operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. We record a valuation allowance against deferred tax assets to reduce the assets to the amounts more likely than not to be realized.

Fair Value Measurements

The assets and liabilities measured and recorded at fair value on a recurring basis were as follows:

	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Deferred compensation plan assets	$	107.3	$	107.3	$	—	$	—	$	89.5	$	89.5	$	—	$	—
Cross-currency swaps		9.7		—		9.7		—		—		—		—		—
Foreign currency forward contracts		—		—		—		—		0.1		—		0.1		—
	$	117.0	$	107.3	$	9.7	$	—	$	89.6	$	89.5	$	0.1	$	—
Liabilities
Cross-currency swaps	$	6.0	$	—	$	6.0	$	—	$	—	$	—	$	—	$	—
Foreign currency forward contracts		—		—		—		—		0.1		—		0.1		—
	$	6.0	$	—	$	6.0	$	—	$	0.1	$	—	$	0.1	$	—

We determine the fair value of our deferred compensation plan assets, comprised of publicly traded securities, by using market quotes as of the last day of the period. The fair value of the cross-currency swaps and foreign currency forward contracts are measured at the value based on either directly or indirectly observable third parties.

The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and other current assets and liabilities approximate their fair values because of the short-term nature of these instruments. The carrying value of our variable-rate long-term debt approximates fair value. The fair value of the Euro-denominated notes, as observable at commonly quoted intervals (Level 2 inputs), was $1,062.5 and $1,052.9 as of December 31, 2019 and 2018, respectively, compared to a carrying value of $1,002.9 and $1,024.6, respectively.

Goodwill and Other Intangible Assets

We had goodwill, finite-lived intangible assets and indefinite-lived intangible assets as follows:

	December 31, 2019						December 31, 2018
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Goodwill⁽¹⁾	$	1,260.1	$	—	$	1,260.1	$	1,297.1	$	—	$	1,297.1
Intangible assets:
Finite-lived:
Customer relationships	$	460.5	$	375.7	$	84.8	$	444.8	$	351.7	$	93.1
Other		20.9		13.7		7.2		18.5		16.0		2.5
		481.4		389.4		92.0		463.3		367.7		95.6
Indefinite-lived:
Tradenames⁽²⁾		52.0		—		52.0		52.0		—		52.0
Reacquired franchise rights		124.6		—		124.6		98.7		—		98.7
		176.6		—		176.6		150.7		—		150.7
Total intangible assets	$	658.0	$	389.4	$	268.6	$	614.0	$	367.7	$	246.3

(1) Balances were net of accumulated impairment loss of $577.4 and $513.4 as of December 31, 2019 and 2018, respectively.

(2) Balances were net of accumulated impairment loss of $139.5 as of both December 31, 2019 and 2018.

The consolidated amortization expense related to intangibles was $29.8, $35.1 and $34.6 in 2019, 2018 and 2017, respectively. Amortization expense expected in each of the next five years related to acquisitions completed as of December 31, 2019 is as follows: 2020 - $26.6, 2021 - $16.2, 2022 - $12.8, 2023 - $10.0 and 2024 - $7.8. The weighted-average useful lives of the customer relationships and other are approximately 14 and 4 years, respectively. The tradenames have been assigned an indefinite life based on our expectation of renewing the tradenames, as required, without material modifications and at a minimal cost, and our expectation of positive cash flows beyond the foreseeable future. Indefinite-lived reacquired franchise rights resulted from our franchise acquisitions in the United States, Switzerland and Canada. These rights entitled the franchisees with unilateral control to operate perpetually in particular territories, and have therefore been assigned an indefinite life. (See Note 4 to the Consolidated Financial Statements for further information on our acquisition of the remaining controlling interest in Manpower Switzerland.)

In accordance with the accounting guidance on goodwill and other intangible assets, we perform an annual impairment test of goodwill at our reporting unit level and indefinite-lived intangible assets at our unit of account level during the third quarter, or more frequently if events or circumstances change that would more likely than not reduce the fair value of our reporting units below their carrying value. We performed our annual impairment test of our goodwill and indefinite-lived intangible assets during the third quarter of 2019, 2018 and 2017, and determined that there was no impairment of our goodwill or indefinite-lived intangible as a result of our annual tests.

We determine the fair value of the reporting unit by utilizing an income approach derived from a discounted cash flow methodology. The income approach is developed from management’s forecasted cash flow data. Significant assumptions used in our annual goodwill impairment test during the third quarter of 2019 included: expected future revenue growth rates, operating unit profit (“OUP”) margins, working capital levels, discount rates ranging from 9.9% to 13.1%, and a terminal value multiple. The expected future revenue growth rates and OUP margins were determined after taking into consideration our historical revenue growth rates and OUP margins, our assessment of future market potential, and our expectations of future business performance. We would record a goodwill impairment charge by the amount for which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of the goodwill. We are also required to test our indefinite-lived intangible assets for impairment by comparing the fair value of the intangible asset with its carrying value. If the intangible asset’s fair value is less than its carrying value, an impairment loss is recognized for the difference.

For the second quarter of 2019, in connection with the preparation of our quarterly financial statements, we assessed the changes in circumstances that occurred during the quarter to determine if it was more likely than not that the fair value of any reporting unit was below its carrying amount. We identified several factors related to our Germany reporting unit that led us to conclude that it was more likely than not that the fair value of the reporting unit was below its carrying amount. These factors included a further downward trend in the performance of the business due to current market conditions, a more cautious outlook for the business stemming from the impact of changes to temporary staffing regulations in Germany, and the recording of a valuation allowance against our Germany deferred tax assets during the second quarter. As we determined that it was more likely than not that the fair value of the Germany reporting unit was below its carrying amount, we performed an interim impairment test on this reporting unit as of June 30, 2019. As a result of our interim test, we recognized a non-cash impairment loss of $60.2 during the second quarter of 2019. The Germany reporting unit is included in the Northern Europe segment.

In addition, during the second quarter of 2019, we recorded a goodwill impairment charge of $3.8 related to our New Zealand operations as a result of it not meeting profitability expectations. The New Zealand reporting unit is included in the APME segment.

Marketable Securities

Prior to April 2019, when we acquired the remaining 51% controlling interest in our Swiss franchise to obtain full ownership of the entity, we accounted for our 49% interest in our Swiss franchise under the equity method of accounting. The Swiss franchise maintained an investment portfolio with a market value of $219.9 as of December 31, 2018. The portfolio was comprised of a wide variety of European and United States debt and equity securities and various professionally-managed funds, all of which were classified as available-for-sale, as well as cash and cash equivalents. Since January 1, 2018, upon adoption of the new accounting guidance on financial instruments, we recognized all the changes in fair value on the investment portfolio in the current period earnings. Prior to January 1, 2018, only our share of net realized gains and losses, and declines in value determined to be other-than-temporary, was included in our Consolidated Statements of Operations. Our share of net unrealized gains and unrealized losses that were determined to be temporary related to these investments was included in accumulated other comprehensive loss, with the offsetting amount increasing or decreasing our investment in the franchise. For the years ended December 31, 2019, 2018 and 2017, realized gains totaled $0.3, $12.7 and $14.7, respectively, and realized losses totaled $0.2, $2.1 and $3.8, respectively. Other-than-temporary impairment amounts were insignificant for 2019, 2018 and 2017.

Capitalized Software for Internal Use

We capitalize purchased software as well as internally developed software. Internal software development costs are capitalized from the time when the internal-use software is considered probable of completion until the software is ready for use. Business analysis, system evaluation, selection and software maintenance costs are expensed as incurred. Capitalized software costs are amortized using the straight-line method over the estimated useful life of the software which ranges from 3 to 10 years. The net capitalized software balance of $7.5 and $7.4 as of December 31, 2019 and 2018, respectively, is included in other assets in the Consolidated Balance Sheets. Amortization expense related to the capitalized software costs was $2.0, $1.5 and $1.3 for 2019, 2018 and 2017, respectively.

Property and Equipment

A summary of property and equipment as of December 31 is as follows:

	2019		2018
Land	$	0.5	$	3.4
Buildings		10.2		12.0
Furniture, fixtures, and autos		164.8		167.3
Computer equipment		130.3		128.7
Leasehold improvements		299.7		302.2
Property and equipment	$	605.5	$	613.6

Property and equipment are stated at cost and are depreciated using primarily the straight-line method over the following estimated useful lives: buildings - up to 40 years; furniture, fixtures, autos and computer equipment - 2 to 15 years; leasehold improvements - lesser of life of asset or expected lease term. Expenditures for renewals and betterments are capitalized whereas expenditures for repairs and maintenance are charged to income as incurred. Upon sale or disposition of property and equipment, the difference between the unamortized cost and the proceeds is recorded as either a gain or a loss and is included in our Consolidated Statements of Operations. Long-lived assets are evaluated for impairment in accordance with the provisions of the accounting guidance on the impairment or disposal of long-lived assets.

Leases

We have operating leases for real estate, vehicles, and equipment. Our leases have remaining lease terms of 1 month to 14 years. Our lease agreements may include renewal or termination options for varying periods that are generally at our discretion. In our lease term, we only include those periods related to renewal options we are reasonably certain to exercise. However, we generally do not include these renewal options as we are not reasonably certain to renew at the lease commencement date. This determination is based on our consideration of certain economic, strategic and other factors that we evaluate at lease commencement date and reevaluate throughout the lease term. Some leases also include options to terminate the leases and we only include those periods beyond the termination date if we are reasonably certain not to exercise the termination option.

Some leasing arrangements require variable payments that are dependent on usage or may vary for other reasons, such as payments for insurance and tax payments. The variable portion of lease payments is not included in our right-of-use (“ROU”) assets or lease liabilities. Rather, variable payments, other than those dependent upon an index or rate, are expensed when the obligation for those payments is incurred and are included in lease expenses recorded in selling and administrative expenses on the Consolidated Statements of Operations.

We have lease agreements with both lease and non-lease components that are treated as a single lease component for all underlying asset classes. Accordingly, all expenses associated with a lease contract are accounted for as lease expenses.

We elected the package of three practical expedients which lessened the transitional burden of implementing the new guidance. Accordingly, we did not reassess: 1) whether any expired or existing contracts are or contain leases; 2) the lease classification for any expired or existing leases; or 3) the initial direct costs for any existing leases. We have also elected the practical expedient to not separate lease and non-lease components. Lastly, we have elected to apply the short-term lease exception for all underlying asset classes. That is, leases with a term of 12 months or less are not recognized on the balance sheet, but rather expensed on a straight-line basis over the lease term. We do not include significant restrictions or covenants in our lease agreements, and residual value guarantees are generally not included within our operating leases. As of December 31, 2019, we did not have any material additional operating leases that have not yet commenced.

Derivative Financial Instruments

We account for our derivative instruments in accordance with the accounting guidance on derivative instruments and hedging activities. Derivative instruments are recorded on the balance sheet as either an asset or liability measured at their fair value. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and of the hedged item attributable to the hedged risk are recognized in earnings. If the derivative is designated as a cash flow hedge, the effective portions of the changes in the fair value of the derivative are recorded as a component of accumulated other comprehensive loss and recognized in the Consolidated Statements of Operations when the hedged item affects earnings. The ineffective portions of the changes in the fair value of cash flow hedges are recognized in earnings.

Foreign Currency Translation

The financial statements of our non-United States subsidiaries have been translated in accordance with the accounting guidance on foreign currency translation. Under the accounting guidance, asset and liability accounts are translated at the current exchange rates and income statement items are translated at the average exchange rates each month. The resulting translation adjustments are recorded as a component of accumulated other comprehensive loss, which is included in shareholders’ equity.

As of July 1, 2018, the Argentina economy was designated as highly-inflationary and was treated as such for accounting purposes starting in the third quarter of 2018.

A portion of our Euro-denominated notes is accounted for as a hedge of our net investment in our subsidiaries with a Euro-functional currency. For this portion of the Euro-denominated notes, since our net investment in these subsidiaries exceeds the amount of the related borrowings, net of tax, the related translation gains or losses are included as a component of accumulated other comprehensive loss.

Shareholders' Equity

Shareholders’ Equity

The Board of Directors authorized the repurchase of 6.0 million shares of our common stock in each of August 2019, August 2018 and July 2016. Share repurchases may be made from time to time through a variety of methods, including open market purchases, block transactions, privately negotiated transactions or similar facilities. In 2019, we repurchased a total of 2.4 million shares at a total cost of $203.0 under the 2018 authorization. In 2018, we repurchased a total of 5.7 million shares, comprised of 2.9 million shares under the 2018 authorization and 2.8 million shares under the 2016 authorization, at a total cost of $500.7. In 2017, we repurchased a total of 1.9 million shares at a total cost of $203.9 under the 2016 authorization. As of December 31, 2019, there were 6.0 million and 0.8 million shares remaining authorized for repurchase under the 2019 authorization and 2018 authorization, respectively, and no shares remaining authorized under the 2016 authorization.

During 2019, 2018 and 2017, the Board of Directors declared total cash dividends of $2.18, $2.02 and $1.86 per share, respectively, resulting in total dividend payments of $129.3, $127.3 and $123.7, respectively.

Noncontrolling interests, included in total shareholders' equity in our Consolidated Balance Sheets, represent amounts related to majority-owned subsidiaries in which we have a controlling financial interest. Net earnings attributable to these noncontrolling interests are recorded in interest and other expenses in our Consolidated Statements of Operations. We recorded expenses of $1.8 and $6.5 for 2019 and 2017, respectively, and income of $4.9 for 2018. The income recorded in 2018 was due to a revision in one of our joint venture agreements.

Cash and Cash Equivalents

We consider all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents.

Payroll Tax Credit

In January 2013, the French government passed legislation, Credit d’Impôt pour la Compétitivité et l’Emploi (“CICE”), that provided payroll tax credits based on a percentage of wages paid to employees receiving less than two-and-a-half times the French minimum wage. The payroll tax credit was equal to 4% of eligible wages in 2013, 6% of eligible wages in 2014 to 2016, 7% of eligible wages in 2017, and 6% of eligible wages in 2018. The CICE payroll tax credit was accounted for as a reduction of our cost of services in the period earned. In January 2019, the French government replaced the CICE program with a new subsidy program.

The payroll tax credit was creditable against our current French income tax payable, with any remaining amount being paid after three years. Given the amount of our current income taxes payable, we would generally receive the vast majority of these payroll tax credits after the three-year period. In April 2019, April 2018 and March 2017, we entered into agreements to sell the credits earned in 2018, 2017 and 2016, respectively, for net proceeds of $103.5 (€92.0), $234.5 (€190.9) and $143.5 (€133.0), respectively, which represented approximately half of the credits earned in 2018 and substantially all the credits earned in 2017 and 2016. We derecognized these receivables upon the sale as the terms of the agreement were such that the transaction qualified for sale treatment according to the accounting guidance on the transfer and servicing of assets. The discount on the sale of these receivables was recorded in cost of services as a reduction of the payroll tax credits earned in the respective year.

Recently Issued Accounting Standards

Accounting Standards Effective as of January 1, 2019

In February 2016, the Financial Accounting Standards Board ("FASB") issued new accounting guidance on leases, ASU No. 2016-02, Leases (Topic 842), which we adopted on January 1, 2019. The new guidance requires that a lessee recognize ROU assets and lease liabilities on the balance sheet for leases with lease terms longer than 12 months. The recognition, measurement and presentation of lease expenses and cash flows depend on the classification by the lessee as a finance or operating lease. We determined that no cumulative effect adjustment to retained earnings was necessary upon adoption. As of the transition date, the ROU asset and total lease liability (current and long-term) were $458.1 and $458.7, respectively.

In August 2017, the FASB issued new guidance on hedge accounting. The amendments in this guidance include the elimination of the concept of recognizing periodic hedge ineffectiveness for cash flow and net investment hedges, recognition and presentation of changes in the fair value of the hedging instrument, recognition and presentation of components excluded from an entity's hedge effectiveness assessment, addition of the ability to elect to perform subsequent effectiveness assessments qualitatively, and addition of new disclosure requirements. We adopted this guidance effective January 1, 2019. There was no impact of this adoption on our Consolidated Financial Statements. See Note 12 to the Consolidated Financial Statements for the modified disclosures.

In February 2018, the FASB issued new guidance on reporting comprehensive income. The new guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the United States Tax Cuts and Jobs Act of 2017 ("Tax Act"). The guidance was effective for us as of January 1, 2019. We elected not to adopt this optional reclassification.

In June 2018, the FASB issued new guidance on the accounting for share-based payment awards. The guidance makes the accounting for share-based payment awards issued to nonemployees largely consistent with the accounting for share-based payment awards issued to employees. We adopted this guidance effective January 1, 2019. There was no impact of this adoption on our Consolidated Financial Statements.

Recently Issued Accounting Standards

In June 2016, the FASB issued new accounting guidance on financial instruments. The new guidance requires application of an impairment model known as the current expected credit loss (“CECL”) model to certain financial instruments. Using the CECL model, an entity recognizes an allowance for expected credit losses based on historical experience, current conditions, and forecasted information rather than the current methodology of delaying recognition of credit losses until it is probable loss has been incurred. The new guidance was effective for us as of January 1, 2020. The adoption of this guidance had no material impact on our Consolidated Financial Statements.

In August 2018, the FASB issued new guidance on disclosures related to fair value measurements. The guidance is intended to improve the effectiveness of the notes to financial statements by facilitating clearer communication, and it includes multiple new, eliminated and modified disclosure requirements. The guidance was effective for us as of January 1, 2020. The adoption of this guidance had no impact on our Consolidated Financial Statements.

In August 2018, the FASB issued new guidance on the accounting for internal-use software. The guidance aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. The guidance was effective for us as of January 1, 2020. The adoption of this guidance had no impact on our Consolidated Financial Statements.

In August 2018, the FASB issued new guidance on disclosures related to defined benefit plans. The guidance amends the current disclosure requirements to add, remove and clarify disclosure requirements for defined benefit pension and other postretirement plans. The guidance was effective for us as of January 1, 2020. The adoption of this guidance had no impact on our Consolidated Financial Statements.

In December 2019, the FASB issued new guidance on income taxes. The guidance removes certain exceptions to the general income tax accounting principles, and clarifies and amends existing guidance to facilitate consistent application of the accounting principles. The new guidance is effective for us as of January 1, 2021. We are assessing the impact of the adoption of this guidance on our Consolidated Financial Statements.

Subsequent Events

Effective January 2020, our segment reporting was realigned due to our Right Management business being combined with each of our respective country business units. Accordingly, our former reportable segment, Right Management, is now reported within each of our respective reportable segments. We will report on the new realigned segments beginning in the first quarter of 2020. All previously reported results will be restated to conform to the new presentation.

We purchased annuities of $19.2 and settled lump sum payments of $3.0 from our United States Qualified Retirement Plan in January and February 2020, respectively, as a result of our ongoing settlement. The completion of lump sum payments in February will trigger final settlement of the plan. Upon settlement of the pension liability, we will reclassify the related pension losses currently recorded in accumulated other comprehensive loss to the consolidated statements of comprehensive income. As of December 31, 2019, we had unrecognized losses related to the pension plans of $7.4, net of tax. The amount of the total required payout to plan participants was determined based on employee elections and market conditions at the time of settlement.

We have evaluated all other events and transactions occurring after the balance sheet date through our filing date and noted no other events that are subject to recognition or disclosure.

Derivative Financial Instruments - Effect of Forward Contracts not Designated as Hedging Instrument (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Not designated as hedging instrument \| Foreign Exchange Forward \| Interest and Other (Income) Expenses, Net
Derivative [Line Items]
Amount of Gain Recognized in Income	$ 11.9

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets
Allowance for doubtful accounts	$ 113.5	$ 115.7
Other Assets
Accumulated amortization on intangible assets	$ 389.4	$ 367.7
Shareholders' Equity
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	25,000,000	25,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	125,000,000	125,000,000
Common stock, issued (in shares)	117,190,883	116,795,899
Treasury stock at cost (in shares)	58,517,128	56,044,485

Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Components of Lease Expense and Other Information

The components of lease expense were as follows:

	Year Ended
	December 31, 2019
Operating lease expense	$	153.5
Short-term lease expense		17.6
Other lease expense⁽¹⁾		15.8
Total lease expense	$	186.9

(1) Other lease expense includes variable lease expense and sublease income.

Other information related to leases was as follows:

Weighted Average Remaining Lease Term
Operating leases	5.6 years
Weighted Average Discount Rate
Operating leases		3.1	%

Supplemental Balance Sheet Information

	December 31,
Supplemental Balance Sheet Information	2019
Operating Leases

Operating lease ROU assets	$	448.5

Operating lease liabilities - current⁽¹⁾	$	122.1
Operating lease liabilities - long-term		336.7
Total operating lease liabilities	$	458.8

(1) Operating lease liabilities - current are included in accrued expenses on our Consolidated Balance Sheets.

Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities as of December 31, 2019 were as follows:

(In millions)
Period Ending December 31, 2019	Operating Leases
2020	$	133.8
2021		102.7
2022		78.7
2023		54.1
2024		38.6
Thereafter		96.0
Total future undiscounted lease payments	$	503.9
Less imputed interest	$	(45.1	)
Total operating lease liabilities	$	458.8

Maturities of Operating Leases Accounted for Under ASC 840

Maturities of operating leases accounted for under ASC 840 as liabilities as of December 31, 2018 were as follows:

(In millions)
Period Ending December 31, 2018	Operating Leases
2019	$	151.4
2020		115.2
2021		85.5
2022		65.0
2023		44.1
Thereafter		105.6
Total minimum lease payments	$	566.8

Schedule II VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for doubtful accounts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 115.7	$ 110.8	$ 98.2
Provisions Charged to Earnings	21.8	23.0	18.1
Write-Offs	(19.1)	(12.0)	(17.6)
Translation Adjustments	(5.0)	(6.3)	12.4
Reclassifications and other, additions	0.1	0.2
Reclassifications and other, deductions			(0.3)
Balance at End of Year	$ 113.5	$ 115.7	$ 110.8

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes

The provision for income taxes was as follows:

Year Ended December 31	2019			2018			2017
Current
United States
Federal	$	16.7		$	17.2		$	211.7
State		2.5			10.8			8.4
Non-United States		243.6			181.9			168.6
Total current		262.8			209.9			388.7
Deferred
United States
Federal		(22.1	)		(7.5	)		(178.2	)
State		1.1			1.0			(0.8	)
Non-United States		(22.0	)		(5.4	)		(17.8	)
Total deferred		(43.0	)		(11.9	)		(196.8	)
Total provision	$	219.8		$	198.0		$	191.9

Income Tax Reconciliation

A tax reconciliation between taxes computed at the United States federal statutory rate of 21% for 2019 and 2018 and 35% for 2017 and the consolidated effective tax rate is as follows:

Year Ended December 31	2019			2018			2017
Income tax based on statutory rate	$	143.9		$	158.5		$	258.1
Increase (decrease) resulting from:
Non-United States tax rate difference:
French business tax⁽¹⁾		54.9			59.1			46.9
French CICE⁽²⁾		—			(39.9	)		(77.1	)
Other⁽¹⁾⁽²⁾		37.3			20.0			(28.6	)
Repatriation of non-United States earnings⁽²⁾⁽³⁾		(17.8	)		2.5			69.7
State income taxes, net of federal benefit		3.1			8.2			1.1
Change in valuation allowance		20.0			0.7			(6.9	)
Work Opportunity Tax Credit		(10.4	)		(8.8	)		(10.5	)
Foreign-Derived Intangible Income deduction		(11.9	)		(12.5	)		—
United States Tax Act and French tax reform⁽³⁾		—			3.2			(73.7	)
Goodwill impairment⁽⁴⁾		11.9			—			—
Gain related to Manpower Switzerland and Greater China transactions⁽⁵⁾		(22.8	)		—			—
Other, net		11.6			7.0			12.9
Tax provision	$	219.8		$	198.0		$	191.9

(4) Non-deductible portion of the goodwill impairment charge recorded in Germany in June 2019.

(5) Non-taxable gains on the disposition of our previously held equity interest in Manpower Switzerland in April 2019 and the deconsolidation of ManpowerGroup Greater China Limited in July 2019.

Deferred Income Taxes Temporary Differences

Temporary differences, which give rise to the deferred taxes, are as follows:

December 31	2019			2018
Future Income Tax Benefits (Expense)
Accrued payroll taxes and insurance	$	12.8		$	13.8
Employee compensation payable		27.2			17.8
Pension and postretirement benefits		62.3			46.9
Intangible assets		(108.7	)		(102.1	)
Repatriation of non-United States earnings		(8.8	)		(15.3	)
Loans denominated in foreign currencies		(16.4	)		(19.6	)
Operating lease ROU assets		(115.8	)		—
Operating lease liabilities		118.1			—
Net operating losses		89.5			100.5
Other		135.0			97.4
Valuation allowance		(87.8	)		(72.4	)
Total future tax benefits	$	107.4		$	67.0
Deferred tax asset	$	126.2		$	99.3
Deferred tax liability		(18.8	)		(32.3	)
Total future tax benefits	$	107.4		$	67.0

Summary of Net Operating Loss Carryforwards

The net operating loss carryforwards expire as follows:

	United States Federal and Non-United States		United States State
2020	$	2.1	$	0.2
2021		5.3		3.0
2022		3.8		11.1
2023		3.9		9.8
2024		5.7		57.3
Thereafter		25.2		87.8
No expirations		353.4		—
Total net operating loss carryforwards	$	399.4	$	169.2

Summary of Unrecognized Tax Benefit Activity

The following table summarizes the activity related to our unrecognized tax benefits during 2019, 2018 and 2017:

	2019			2018			2017
Gross unrecognized tax benefits, beginning of year	$	32.2		$	46.1		$	23.8
Increases in prior year tax positions		35.7			11.4			27.1
Decreases in prior year tax positions		(2.6	)		(1.8	)		(1.2	)
Increases for current year tax positions		4.7			5.9			6.6
Expiration of statute of limitations and audit settlements		(4.1	)		(29.4	)		(10.2	)
Gross unrecognized tax benefits, end of year	$	65.9		$	32.2		$	46.1
Potential interest and penalties		3.6			2.0			20.4
Balance, end of year	$	69.5		$	34.2		$	66.5

Segment Data - Segment Information by Geographical Region (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from Services	$ 5,196.6	$ 5,248.9	$ 5,373.1	$ 5,044.9	$ 5,393.2	$ 5,418.7	$ 5,656.9	$ 5,522.4	$ 20,863.5	$ 21,991.2	$ 21,034.3
Long-Lived Assets	150.9				160.0				150.9	160.0	161.3
United States Plans
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from Services									2,590.6	2,608.9	2,758.5
Long-Lived Assets	20.5				22.4				20.5	22.4	24.9
France
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from Services									5,479.6	5,846.4	5,493.9
Long-Lived Assets	46.9				50.1				46.9	50.1	49.1
Italy
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from Services									1,508.3	1,673.9	1,479.4
Long-Lived Assets	5.2				5.0				5.2	5.0	4.9
United Kingdom
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from Services									1,598.6	1,672.1	1,619.2
Long-Lived Assets	5.8				7.0				5.8	7.0	9.1
Total Foreign
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from Services									18,272.9	19,382.3	18,275.8
Long-Lived Assets	$ 130.4				$ 137.6				$ 130.4	$ 137.6	$ 136.4

Retirement and Deferred Compensation Plans - Schedule of Weighted-Average Assumptions Used in Measurement of Benefit Obligation and Net Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States Plans
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Rate of compensation increase	3.00%	3.00%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Rate of compensation increase	3.00%	3.00%	3.00%
United States Plans \| Pension plans
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.50%	4.20%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - service cost	4.20%	3.60%	4.10%
Discount rate - interest cost	4.20%	3.20%	3.30%
Expected long-term return on plan assets	4.30%	4.50%	4.80%
Non-United States Plans
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Rate of compensation increase	1.70%	1.80%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Rate of compensation increase	1.70%	1.80%	1.70%
Non-United States Plans \| Pension plans
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	1.10%	2.40%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - service cost	1.80%	2.10%	2.20%
Discount rate - interest cost	1.80%	2.10%	2.20%
Expected long-term return on plan assets	2.70%	2.70%	2.80%

Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Data

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
Year Ended December 31, 2019
Revenues from services	$	5,044.9	$	5,373.1	$	5,248.9	$	5,196.6	$	20,863.5
Gross profit		804.8		870.4		840.3		859.6		3,375.1
Operating profit^(a)(b)(d)		105.5		130.8		217.0		191.6		644.9
Net earnings^(a)(b)(c)(d)		53.5		127.3		146.1		138.8		465.7
Net earnings per share - basic	$	0.88	$	2.12	$	2.44	$	2.35	$	7.78
Net earnings per share - diluted^(e)		0.88		2.11		2.42		2.33		7.72
Dividends per share		—		1.09		—		1.09		2.18

Year Ended December 31, 2018
Revenues from services	$	5,522.4	$	5,656.9	$	5,418.7	$	5,393.2	$	21,991.2
Gross profit		885.4		922.7		890.6		880.3		3,579.0
Operating profit^(f)		153.8		208.3		216.7		217.9		796.7
Net earnings^(f)		97.0		143.4		158.0		158.3		556.7
Net earnings per share - basic	$	1.46	$	2.18	$	2.45	$	2.56	$	8.62
Net earnings per share - diluted^(g)		1.45		2.17		2.43		2.54		8.56
Dividends per share		—		1.01		—		1.01		2.02

(a) Included restructuring costs of $39.8, $31.4 net of tax, recorded in the first quarter.

(c) Included gain of $80.4 from the acquisition of the remaining controlling interest in Manpower Switzerland recorded in interest and other (income) expenses, net in the second quarter.

(d) Included gain of $30.4 from the ManpowerGroup Greater China Limited IPO recorded in the third quarter.

(f) Included restructuring costs of $24.0, $18.1 net of tax, and $15.3, $11.8 net of tax, recorded in the first and second quarter, respectively.

(g) Included in the results are restructuring costs per diluted share of $(0.27) and $(0.18) for the first and second quarter, respectively.

Retirement and Deferred Compensation Plans - Reconciliation of Changes in Benefit Obligations and the Statement of Funded Status of Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension plans
Change in Benefit Obligation
Service cost	$ 15.1	$ 10.9	$ 10.1
Interest cost	12.7	11.6	10.6
Pension plans \| United States Plans
Change in Benefit Obligation
Benefit obligation, beginning of year	48.9	53.7
Interest cost	1.8	1.6
Actuarial loss (gain)	6.3	(2.0)
Benefits paid	(4.2)	(4.4)
Benefit obligation, end of year	52.8	48.9	53.7
Change in Plan Assets
Fair value of plan assets, beginning of year	36.1	38.7
Actual return on plan assets	4.4	(0.7)
Company contributions	2.5	2.5
Benefits paid	(4.2)	(4.4)
Fair value of plan assets, end of year	38.8	36.1	38.7
Funded Status at End of Year
Funded status, end of year	(14.0)	(12.8)
Amounts Recognized
Noncurrent assets	15.0	15.0
Current liabilities	(2.5)	(2.5)
Noncurrent liabilities	(26.5)	(25.3)
Net amount recognized	(14.0)	(12.8)
Pension plans \| Non-United States Plans
Change in Benefit Obligation
Benefit obligation, beginning of year	450.0	489.5
Service cost	15.1	10.9
Interest cost	10.9	10.0
Acquisitions	201.2
Settlements	(40.9)
Transfers	52.7	1.2
Actuarial loss (gain)	100.1	(28.0)
Plan participant contributions	9.0	0.2
Benefits paid	(11.3)	(10.5)
Currency exchange rate changes	8.0	(23.3)
Benefit obligation, end of year	794.8	450.0	489.5
Change in Plan Assets
Fair value of plan assets, beginning of year	354.1	376.7
Actual return on plan assets	69.5	(2.4)
Acquisitions	196.8
Settlements	(40.9)
Transfers	51.6	(0.3)
Plan participant contributions	9.0	0.2
Company contributions	15.4	9.2
Benefits paid	(11.3)	(10.5)
Currency exchange rate changes	11.2	(18.8)
Fair value of plan assets, end of year	655.4	354.1	376.7
Funded Status at End of Year
Funded status, end of year	(139.4)	(95.9)
Amounts Recognized
Noncurrent assets	41.4	46.9
Current liabilities	(0.7)	(0.5)
Noncurrent liabilities	(180.1)	(142.3)
Net amount recognized	(139.4)	(95.9)
Retiree health care plan
Change in Benefit Obligation
Benefit obligation, beginning of year	13.7	14.9
Interest cost	0.5	0.5	0.6
Actuarial loss (gain)	0.8	(0.5)
Benefits paid	(0.9)	(1.2)
Benefit obligation, end of year	14.1	13.7	$ 14.9
Funded Status at End of Year
Funded status, end of year	(14.1)	(13.7)
Amounts Recognized
Current liabilities	(1.1)	(1.1)
Noncurrent liabilities	(13.0)	(12.6)
Net amount recognized	$ (14.1)	$ (13.7)

Derivative Financial Instruments - Impact of Changes in Fair Values of Derivatives Designated as Cash Flow Hedges on OCI, AOCI and Earnings (Details) - Cross-currency swap - Cash flow hedge - Designated as hedging instrument $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 7.3
Interest and Other (Income) Expenses, Net
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI into Income	$ 8.3

Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax [Line Items]
Income tax based on statutory rate		$ 143.9	$ 158.5	$ 258.1
Increase (decrease) resulting from:
Repatriation of non-United States earnings		(17.8)	2.5	69.7
State income taxes, net of federal benefit		3.1	8.2	1.1
Change in valuation allowance		20.0	0.7	(6.9)
Work Opportunity Tax Credit		(10.4)	(8.8)	(10.5)
Foreign-Derived Intangible Income deduction		(11.9)	(12.5)
United States Tax Act and French tax reform	$ (73.7)		3.2	(73.7)
Goodwill impairment		11.9
Other, net		11.6	7.0	12.9
Total provision		219.8	198.0	191.9
Manpower Switzerland and Greater China
Increase (decrease) resulting from:
Gain related to Manpower Switzerland and Greater China transactions		(22.8)
French Business Tax
Increase (decrease) resulting from:
Non-United States tax rate difference:		54.9	59.1	46.9
French CICE
Increase (decrease) resulting from:
Non-United States tax rate difference:			(39.9)	(77.1)
Other
Increase (decrease) resulting from:
Non-United States tax rate difference:		$ 37.3	$ 20.0	$ (28.6)

Derivative Financial Instruments - Fair Value of Derivative and Non-Derivative Assets and Liabilities on the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Assets	$ 9.7	$ 0.1
Liabilities	1,008.9	1,024.7
Not designated as hedging instrument \| Foreign currency forward contracts \| Accounts receivable, net
Derivatives Fair Value [Line Items]
Assets		0.1
Not designated as hedging instrument \| Foreign currency forward contracts \| Accrued liabilities
Derivatives Fair Value [Line Items]
Liabilities		0.1
Cash flow hedge \| Designated as economic hedges \| Cross-currency swap \| Prepaid expenses and other assets
Derivatives Fair Value [Line Items]
Assets	9.7
Net Investment Hedging \| Designated as economic hedges \| Cross-currency swap \| Accrued liabilities
Derivatives Fair Value [Line Items]
Liabilities	6.0
Net Investment Hedging \| Designated as economic hedges \| Euro Notes \| Long-term debt
Derivatives Fair Value [Line Items]
Liabilities	$ 1,002.9	$ 1,024.6

Retirement and Deferred Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Reconciliation of Changes in Benefit Obligations and the Statement of Funded Status of Plan

The reconciliation of the changes in the plans’ benefit obligations and the fair value of plan assets and the funded status of the plans are as follows:

	United States Plans						Non-United States Plans
Year Ended December 31	2019			2018			2019			2018
Change in Benefit Obligation
Benefit obligation, beginning of year	$	48.9		$	53.7		$	450.0		$	489.5
Service cost		—			—			15.1			10.9
Interest cost		1.8			1.6			10.9			10.0
Acquisitions		—			—			201.2			—
Settlements		—			—			(40.9	)		—
Transfers		—			—			52.7			1.2
Actuarial loss (gain)		6.3			(2.0	)		100.1			(28.0	)
Plan participant contributions		—			—			9.0			0.2
Benefits paid		(4.2	)		(4.4	)		(11.3	)		(10.5	)
Currency exchange rate changes		—			—			8.0			(23.3	)
Benefit obligation, end of year	$	52.8		$	48.9		$	794.8		$	450.0

	United States Plans						Non-United States Plans
Year Ended December 31	2019			2018			2019			2018
Change in Plan Assets
Fair value of plan assets, beginning of year	$	36.1		$	38.7		$	354.1		$	376.7
Actual return on plan assets		4.4			(0.7	)		69.5			(2.4	)
Acquisitions		—			—			196.8			—
Settlements		—			—			(40.9	)		—
Transfers		—			—			51.6			(0.3	)
Plan participant contributions		—			—			9.0			0.2
Company contributions		2.5			2.5			15.4			9.2
Benefits paid		(4.2	)		(4.4	)		(11.3	)		(10.5	)
Currency exchange rate changes		—			—			11.2			(18.8	)
Fair value of plan assets, end of year	$	38.8		$	36.1		$	655.4		$	354.1
Funded Status at End of Year
Funded status, end of year	$	(14.0	)	$	(12.8	)	$	(139.4	)	$	(95.9	)
Amounts Recognized
Noncurrent assets	$	15.0		$	15.0		$	41.4		$	46.9
Current liabilities		(2.5	)		(2.5	)		(0.7	)		(0.5	)
Noncurrent liabilities		(26.5	)		(25.3	)		(180.1	)		(142.3	)
Net amount recognized	$	(14.0	)	$	(12.8	)	$	(139.4	)	$	(95.9	)

The reconciliation of the changes in the plan’s benefit obligation and the statement of the funded status of the plan were as follows:

Year Ended December 31	2019			2018
Change in Benefit Obligation
Benefit obligation, beginning of year	$	13.7		$	14.9
Interest cost		0.5			0.5
Actuarial loss (gain)		0.8			(0.5	)
Benefits paid		(0.9	)		(1.2	)
Benefit obligation, end of year	$	14.1		$	13.7
Funded Status at End of Year
Funded status, end of year	$	(14.1	)	$	(13.7	)
Amounts Recognized
Current liabilities	$	(1.1	)	$	(1.1	)
Noncurrent liabilities		(13.0	)		(12.6	)
Net amount recognized	$	(14.1	)	$	(13.7	)

Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss, Net of Tax

Amounts recognized in accumulated other comprehensive loss, net of tax, consisted of:

	United States Plans				Non-United States Plans
Year Ended December 31	2019		2018		2019		2018
Net loss	$	15.8	$	13.7	$	50.5	$	16.5
Prior service cost		—		—		7.8		7.7
Total	$	15.8	$	13.7	$	58.3	$	24.2

Schedule of Plans With Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

The accumulated benefit obligation for some of our plans exceeded the fair value of plan assets as follows:

December 31	2019		2018
Accumulated benefit obligation	$	163.8	$	129.4
Plan assets		80.4		67.0

Schedule of Plans With Projected Benefit Obligation in Excess of Fair Value of Plan Assets

The projected benefit obligation for some of our plans exceeded the fair value of plan assets as follows:

December 31	2019		2018
Projected benefit obligation	$	414.6	$	135.8
Plan assets		324.3		67.0

Schedule of Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Loss

The components of the net periodic benefit cost and other amounts recognized in other comprehensive loss for all plans were as follows:

Year Ended December 31	2019			2018			2017
Net Periodic Benefit Cost
Service cost	$	15.1		$	10.9		$	10.1
Interest cost		12.7			11.6			10.6
Expected return on assets		(12.9	)		(10.6	)		(10.8	)
Settlements		0.4			—			—
Net loss		1.2			1.4			0.9
Prior service cost		0.7			0.6			0.4
Net periodic benefit cost		17.2			13.9			11.2
Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income/Loss
Net loss (gain)		45.5			(16.6	)		(1.5	)
Prior service cost		1.0			1.4			2.9
Amortization of net loss		(1.6	)		(1.4	)		(0.9	)
Amortization of prior service cost		(0.7	)		(0.6	)		(0.4	)
Total recognized in other comprehensive income/loss		44.2			(17.2	)		0.1
Total recognized in net periodic benefit cost and other comprehensive income/loss	$	61.4		$	(3.3	)	$	11.3

The components of net periodic benefit cost and other amounts recognized in other comprehensive loss for this plan were as follows:

Year Ended December 31	2019			2018			2017
Net Periodic Benefit Credit
Interest cost	$	0.5		$	0.5		$	0.6
Net loss		—			0.1			0.1
Prior service credit		(0.8	)		(0.8	)		(0.8	)
Net periodic benefit credit	$	(0.3	)	$	(0.2	)	$	(0.1	)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income/Loss
Net loss (gain)	$	0.8		$	(0.5	)	$	(0.3	)
Amortization of net loss		—			(0.1	)		(0.1	)
Amortization of prior service credit		0.8			0.8			0.8
Total recognized in other comprehensive income/loss		1.6			0.2			0.4
Total recognized in net periodic benefit cost and other comprehensive income/loss	$	1.3		$	—		$	0.3

Schedule of Weighted-Average Assumptions Used in Measurement of Benefit Obligation and Net Periodic Benefit Cost

The weighted-average assumptions used in the measurement of the benefit obligation were as follows:

	United States Plans						Non-United States Plans
Year Ended December 31	2019			2018			2019			2018
Discount rate		2.5	%		4.2	%		1.1	%		2.4	%
Rate of compensation increase		3.0	%		3.0	%		1.7	%		1.8	%

The weighted-average assumptions used in the measurement of the net periodic benefit cost were as follows:

	United States Plans									Non-United States Plans
Year Ended December 31	2019			2018			2017			2019			2018			2017
Discount rate - service cost		4.2	%		3.6	%		4.1	%		1.8	%		2.1	%		2.2	%
Discount rate - interest cost		4.2	%		3.2	%		3.3	%		1.8	%		2.1	%		2.2	%
Expected long-term return on plan assets		4.3	%		4.5	%		4.8	%		2.7	%		2.7	%		2.8	%
Rate of compensation increase		3.0	%		3.0	%		3.0	%		1.7	%		1.8	%		1.7	%

Schedule of Fair Value of Plan Assets By Asset Category

The fair value of our pension plan assets by asset category was as follows:

	United States Plans								Non-United States Plans
	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset Category
Cash and cash equivalents⁽¹⁾	$	5.8	$	—	$	5.8	$	—	$	5.5	$	5.5	$	—	$	—
Equity securities:
Mutual funds		7.8		7.8		—		—		98.0		98.0		—		—
Common stock		—		—		—		—		22.3		22.3		—		—
Fixed income instruments:
Fixed income funds		25.2		—		25.2		—		160.0		—		160.0		—
Annuity contract		—		—		—		—		52.5		—		—		52.5
Bonds		—		—		—		—		37.0		—		37.0		—
Guaranteed insurance contracts		—		—		—		—		18.5		—		18.5		—
Other types of investments:
Insurance contracts		—		—		—		—		130.6		—		—		130.6
Real estate funds		—		—		—		—		93.3		—		87.3		6.0
Hedge funds		—		—		—		—		29.3		—		9.6		19.7
Other		—		—		—		—		8.4		—		2.4		6.0
	$	38.8	$	7.8	$	31.0	$	—	$	655.4	$	125.8	$	314.8	$	214.8

(1) This category includes a prime obligations money market portfolio.

	United States Plans								Non-United States Plans
	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset Category
Cash and cash equivalents⁽¹⁾	$	5.1	$	—	$	5.1	$	—	$	35.5	$	35.5	$	—	$	—
Equity securities:
Mutual funds		6.3		6.3		—		—		30.5		30.5		—		—
Fixed income instruments:
Fixed income funds		24.7		—		24.7		—		99.4		—		99.4		—
Annuity contract		—		—		—		—		46.2		—		—		46.2
Guaranteed insurance contracts		—		—		—		—		17.7		—		17.7		—
Bank loans		—		—		—		—		8.9		—		8.9		—
Other types of investments:
Insurance contracts		—		—		—		—		107.7		—		—		107.7
Real estate funds		—		—		—		—		8.2		—		8.2		—
	$	36.1	$	6.3	$	29.8	$	—	$	354.1	$	66.0	$	134.2	$	153.9

(1) This category includes a prime obligations money market portfolio.

Schedule of Changes in Fair Value of Pension Assets Measured Using Level 3 Inputs

Year Ended December 31	2019		2018
Balance, beginning of year	$	153.9	$	108.8
Actual return on plan assets		30.5		4.2
Acquisitions		27.6		—
Transfers		—		46.2
Purchases, sales and settlements, net		2.5		(0.3	)
Currency exchange rate changes		0.3		(5.0	)
Balance, end of year	$	214.8	$	153.9

Schedule of Projected Future Benefit Payments

Projected benefit payments from the plans as of December 31, 2019 were estimated as follows:

Year	Pension Plans		Retiree Health Care Plan
2020	$	86.0	$	1.1
2021		35.3		1.1
2022		25.6		1.1
2023		23.2		1.1
2024		25.3		1.0
2025–2029		142.0		4.7
Total projected benefit payments	$	337.4	$	10.1

Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Revenues from services	$ 5,196.6	$ 5,248.9	$ 5,373.1	$ 5,044.9	$ 5,393.2	$ 5,418.7	$ 5,656.9	$ 5,522.4	$ 20,863.5	$ 21,991.2	$ 21,034.3
Franchise fees
Disaggregation Of Revenue [Line Items]
Revenues from services									$ 18.4	$ 24.1	$ 23.7

Acquisitions and Dispositions - Summary of Consolidated Unaudited Proforma Historical Net Revenues from Services (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Manpower Switzerland
Business Acquisition [Line Items]
Revenues from services	$ 20,957.9	$ 22,452.6

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

(1) Summary of Significant Accounting Policies

Nature of Operations

ManpowerGroup Inc. is a world leader in the innovative workforce solutions and services industry. Our global network of over 2,500 offices in 75 countries and territories allows us to meet the needs of our global, multinational and local clients across all major industry segments. Our largest operations, based on revenues, are located in France, the United States, the United Kingdom and Italy. We specialize in permanent, temporary and contract recruitment and assessment; training and development; outsourcing; career management and workforce consulting services. We provide services to a wide variety of clients, none of which individually comprise a significant portion of revenues for us as a whole.

Use of Estimates

Basis of Consolidation

Revenues

Accounts Receivable, Contract Assets and Contract Liabilities

Allowance for Doubtful Accounts

Advertising Costs

We expense production costs of advertising as they are incurred. Advertising expenses were $25.7, $27.9 and $26.6 in 2019, 2018 and 2017, respectively.

Restructuring Costs

	Americas⁽¹⁾			Southern Europe⁽²⁾			Northern Europe			APME			Right Management			Corporate			Total
Balance, December 31, 2017	$	1.7		$	0.9		$	9.6		$	—		$	1.2		$	0.1		$	13.5
Severance costs		0.3			5.4			25.8			—			0.3			—			31.8
Office closure costs		—			—			7.5			—			—			—			7.5
Costs paid or utilized		(1.7	)		(4.6	)		(29.8	)		—			(1.1	)		(0.1	)		(37.3	)
Balance, December 31, 2018	$	0.3		$	1.7		$	13.1		$	—		$	0.4		$	—		$	15.5
Severance costs		3.6			5.2			17.6			3.5			0.2			2.3			32.4
Office closure costs⁽³⁾		1.3			0.1			2.0			0.9			4.5			0.8			9.6
Costs paid, utilized or transferred out⁽³⁾		(4.8	)		(6.3	)		(26.5	)		(4.4	)		(5.1	)		(3.1	)		(50.2	)
Balance, December 31, 2019	$	0.4		$	0.7		$	6.2		$	—		$	—		$	—		$	7.3

Income Taxes

Fair Value Measurements

The assets and liabilities measured and recorded at fair value on a recurring basis were as follows:

	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2019		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Deferred compensation plan assets	$	107.3	$	107.3	$	—	$	—	$	89.5	$	89.5	$	—	$	—
Cross-currency swaps		9.7		—		9.7		—		—		—		—		—
Foreign currency forward contracts		—		—		—		—		0.1		—		0.1		—
	$	117.0	$	107.3	$	9.7	$	—	$	89.6	$	89.5	$	0.1	$	—
Liabilities
Cross-currency swaps	$	6.0	$	—	$	6.0	$	—	$	—	$	—	$	—	$	—
Foreign currency forward contracts		—		—		—		—		0.1		—		0.1		—
	$	6.0	$	—	$	6.0	$	—	$	0.1	$	—	$	0.1	$	—

Goodwill and Other Intangible Assets

We had goodwill, finite-lived intangible assets and indefinite-lived intangible assets as follows:

	December 31, 2019						December 31, 2018
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Goodwill⁽¹⁾	$	1,260.1	$	—	$	1,260.1	$	1,297.1	$	—	$	1,297.1
Intangible assets:
Finite-lived:
Customer relationships	$	460.5	$	375.7	$	84.8	$	444.8	$	351.7	$	93.1
Other		20.9		13.7		7.2		18.5		16.0		2.5
		481.4		389.4		92.0		463.3		367.7		95.6
Indefinite-lived:
Tradenames⁽²⁾		52.0		—		52.0		52.0		—		52.0
Reacquired franchise rights		124.6		—		124.6		98.7		—		98.7
		176.6		—		176.6		150.7		—		150.7
Total intangible assets	$	658.0	$	389.4	$	268.6	$	614.0	$	367.7	$	246.3

(1) Balances were net of accumulated impairment loss of $577.4 and $513.4 as of December 31, 2019 and 2018, respectively.

(2) Balances were net of accumulated impairment loss of $139.5 as of both December 31, 2019 and 2018.

Marketable Securities

Capitalized Software for Internal Use

Property and Equipment

A summary of property and equipment as of December 31 is as follows:

	2019		2018
Land	$	0.5	$	3.4
Buildings		10.2		12.0
Furniture, fixtures, and autos		164.8		167.3
Computer equipment		130.3		128.7
Leasehold improvements		299.7		302.2
Property and equipment	$	605.5	$	613.6

Leases

Derivative Financial Instruments

Foreign Currency Translation

As of July 1, 2018, the Argentina economy was designated as highly-inflationary and was treated as such for accounting purposes starting in the third quarter of 2018.

Shareholders’ Equity

Cash and Cash Equivalents

We consider all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents.

Payroll Tax Credit

Accounting Standards Effective as of January 1, 2019

Recently Issued Accounting Standards

Subsequent Events

We have evaluated all other events and transactions occurring after the balance sheet date through our filing date and noted no other events that are subject to recognition or disclosure.

Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss, Net of Tax

The components of accumulated other comprehensive loss, net of tax, were as follows:

December 31	2019			2018
Foreign currency translation	$	(260.5	)	$	(223.2	)
Translation gain (loss) on derivative instruments, net of income taxes of $(9.1) and $(12.9), respectively		13.1			(4.7	)
Translation loss on long-term intercompany loans		(121.5	)		(137.2	)
Defined benefit pension plans, net of income taxes of $(30.9) and $(23.2), respectively		(74.1	)		(37.9	)
Retiree health care plan, net of income taxes of $1.6 and $2.0, respectively		2.0			3.2
Accumulated other comprehensive loss	$	(441.0	)	$	(399.8	)

Income Taxes - Summary of Unrecognized Tax Benefit Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross unrecognized tax benefits, beginning of year	$ 32.2	$ 46.1	$ 23.8
Increases in prior year tax positions	35.7	11.4	27.1
Decreases in prior year tax positions	(2.6)	(1.8)	(1.2)
Increases for current year tax positions	4.7	5.9	6.6
Expiration of statute of limitations and audit settlements	(4.1)	(29.4)	(10.2)
Gross unrecognized tax benefits, end of year	65.9	32.2	46.1
Potential interest and penalties	3.6	2.0	20.4
Balance, end of year	$ 69.5	$ 34.2	$ 66.5

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax [Line Items]
Pretax income of non-United States operations	$ 416.6	$ 551.0	$ 514.9
Unremitted earnings of non-United States subsidiaries that are considered to be permanently invested	371.5
Unremitted earnings of non-United States subsidiaries that may be remitted	1,867.0
Deferred tax liability, undistributed foreign earnings	8.8	15.3
Deferred tax asset on net operating losses	89.5	100.5
Valuation allowance, net operating losses	72.7
Gross unrecognized tax benefits	69.5	34.2	66.5
Increase to unrecognized tax benefits	32.0
Interest and penalties related to unrecognized tax benefits	$ 1.6	$ (18.4)	$ 0.2
Earliest Tax Year
Income Tax [Line Items]
Income tax examination year under examination	2012
Latest Tax Year
Income Tax [Line Items]
Income tax examination year under examination	2019
United States
Income Tax [Line Items]
U.S. Federal statutory rate (as percent)	21.00%	21.00%	35.00%
United States Federal and Non-United States
Income Tax [Line Items]
Net operating loss carryforwards	$ 399.4
United States State
Income Tax [Line Items]
Net operating loss carryforwards	$ 169.2

Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

A summary of stock option activity is as follows:

	Shares (000)	Wtd. Avg. Exercise Price Per Share	Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value (in millions)
Outstanding, January 1, 2017	1,127	$66
Granted	145	97
Exercised	(680)	64		$24
Expired or cancelled	(18)	75
Outstanding, December 31, 2017	574	$77	7.1	$28
Vested or expected to vest, December 31, 2017	571	$77	7.1
Exercisable, December 31, 2017	220	$65	5.3	$14
Outstanding, January 1, 2018	574	$77
Granted	122	123
Exercised	(24)	78		$1
Expired or cancelled	—	—
Outstanding, December 31, 2018	672	$85	5.9	$1
Vested or expected to vest, December 31, 2018	670	$85	5.9
Exercisable, December 31, 2018	401	$76	4.5	$1
Outstanding, January 1, 2019	672	$85
Granted	174	84
Exercised	(79)	65		$2
Expired or cancelled	(44)	91
Outstanding, December 31, 2019	723	$87	6.1	$10
Vested or expected to vest, December 31, 2019	722	$87	6.1
Exercisable, December 31, 2019	426	$82	4.5	$8

Schedule of Options Outstanding and Exercisable

Options outstanding and exercisable as of December 31, 2019 were as follows:

	Options Outstanding			Options Exercisable
Exercise Price	Shares (000)	Weighted- Average Remaining Contractual Life (years)	Weighted- Average Exercise Price	Shares (000)	Weighted- Average Exercise Price
$44-$59	66	2.1	$51	66	$51
$60-$79	225	5.3	76	196	76
$80-$99	319	7.2	89	115	93
$100-$123	113	6.6	123	49	123
	723	6.1	$87	426	$82

Assumptions Used to Estimate Fair Value of Share Awards

We estimated the fair value of each stock option on the date of grant using the Black-Scholes option pricing model and the following assumptions:

Year Ended December 31	2019			2018			2017
Average risk-free interest rate		2.5	%		2.6	%		2.0	%
Expected dividend yield		2.9	%		1.6	%		2.0	%
Expected volatility		27.0	%		27.0	%		31.0	%
Expected term (years)		6.0			6.0			6.0

Summary of Restricted Stock Activity

A summary of restricted stock activity is as follows:

	Shares (000)	Wtd. Avg. Price Per Share	Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value (in millions)
Unvested, January 1, 2017	451	$70	1.4
Granted	167	98
Vested	(133)	79
Forfeited	(37)	80
Unvested, December 31, 2017	448	$77	1.2
Granted	145	$119
Vested	(174)	77
Forfeited	(23)	89
Unvested, December 31, 2018	396	$92	1.3
Granted	236	$84
Vested	(150)	76
Forfeited	(36)	93
Unvested, December 31, 2019	446	$97	1.5	$43

Performance Share Units

A summary of the performance share units detail by grant year is as follows:

	2016		2017		2018		2019
Grant Date(s)	February 16, 2016		February 9, 2017		February 15, 2018		February 15, 2019
Performance Period (years)	2016-2018		2017-2019		2018-2020		2019-2021
Vesting Date	February 2019		February 2020(a)		February 2021(a)		February 2022(a)
Payout Levels (in units):
Threshold Award		65,141		57,563		47,003		68,132
Target Award		130,282		115,125		94,005		136,264
Outstanding Award		260,564		230,250		188,010		272,528
Shares Issued in 2019		125,070		—		—		—
Payout Achieved Over Performance Period		—		88,377		—		—

(a) 2017, 2018 and 2019 awards are scheduled to vest in February 2020, 2021 and 2022, respectively, when the Executive Compensation and Human Resources Committee of the Board of Directors determines the achievement of the performance criteria.

Share-Based Compensation Plans

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-Based Compensation Plans

(3) Share-Based Compensation Plans

During 2019, 2018 and 2017, we recognized $26.3, $27.8 and $28.7, respectively, in share-based compensation expense related to stock options, deferred stock, restricted stock and performance share units, all of which is recorded in selling and administrative expenses. Consideration received from share-based awards for 2019, 2018 and 2017 was $7.0, $5.2 and $44.2, respectively. The total income tax benefit recognized related to share-based compensation during 2019, 2018 and 2017 was $1.8, $4.5 and $23.7, respectively. We recognize compensation expense on grants of share-based compensation awards on a straight-line basis over the vesting period of each award.

Stock Options

All share-based compensation is granted under the 2011 Equity Incentive Plan of ManpowerGroup Inc. (“2011 Plan”). Options and stock appreciation rights are granted at a price not less than 100% of the fair market value of the common stock at the date of grant. Generally, options are granted with a ratable vesting period of up to four years and expire ten years from date of grant. No stock appreciation rights had been granted or were outstanding as of December 31, 2019 or 2018. A summary of stock option activity is as follows:

	Shares (000)	Wtd. Avg. Exercise Price Per Share	Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value (in millions)
Outstanding, January 1, 2017	1,127	$66
Granted	145	97
Exercised	(680)	64		$24
Expired or cancelled	(18)	75
Outstanding, December 31, 2017	574	$77	7.1	$28
Vested or expected to vest, December 31, 2017	571	$77	7.1
Exercisable, December 31, 2017	220	$65	5.3	$14
Outstanding, January 1, 2018	574	$77
Granted	122	123
Exercised	(24)	78		$1
Expired or cancelled	—	—
Outstanding, December 31, 2018	672	$85	5.9	$1
Vested or expected to vest, December 31, 2018	670	$85	5.9
Exercisable, December 31, 2018	401	$76	4.5	$1
Outstanding, January 1, 2019	672	$85
Granted	174	84
Exercised	(79)	65		$2
Expired or cancelled	(44)	91
Outstanding, December 31, 2019	723	$87	6.1	$10
Vested or expected to vest, December 31, 2019	722	$87	6.1
Exercisable, December 31, 2019	426	$82	4.5	$8

Options outstanding and exercisable as of December 31, 2019 were as follows:

	Options Outstanding			Options Exercisable
Exercise Price	Shares (000)	Weighted- Average Remaining Contractual Life (years)	Weighted- Average Exercise Price	Shares (000)	Weighted- Average Exercise Price
$44-$59	66	2.1	$51	66	$51
$60-$79	225	5.3	76	196	76
$80-$99	319	7.2	89	115	93
$100-$123	113	6.6	123	49	123
	723	6.1	$87	426	$82

We recognized expense of $4.0, $4.0 and $3.7 related to stock options for the years ended December 31, 2019, 2018 and 2017, respectively. The total fair value of options vested during the same periods was $2.3, $3.1 and $2.3, respectively. As of December 31, 2019, total unrecognized compensation cost was approximately $2.0, net of estimated forfeitures, which we expect to recognize over a weighted-average period of approximately 2.0 years.

We estimated the fair value of each stock option on the date of grant using the Black-Scholes option pricing model and the following assumptions:

Year Ended December 31	2019			2018			2017
Average risk-free interest rate		2.5	%		2.6	%		2.0	%
Expected dividend yield		2.9	%		1.6	%		2.0	%
Expected volatility		27.0	%		27.0	%		31.0	%
Expected term (years)		6.0			6.0			6.0

The average risk-free interest rate is based on United States Treasury security rates corresponding to the expected term in effect as of the grant date. The expected dividend yield is based on the expected annual dividend as a percentage of the market value of our common stock as of the grant date. We determined expected volatility using a weighted average of daily historical volatility (weighted 75%) of our stock price over the past five years and implied volatility (weighted 25%) based upon exchange traded options for our common stock. We believe that a blend of historical volatility and implied volatility better reflects future market conditions and better indicates expected volatility than considering purely historical volatility. We determined the expected term of the stock options using historical data. The weighted-average grant-date fair value per option granted during the year was $17.78, $31.46 and $25.58 in 2019, 2018 and 2017, respectively.

Deferred Stock

Our non-employee directors may elect to receive deferred stock in lieu of part or all of their annual cash retainer otherwise payable to them. The number of shares of deferred stock is determined pursuant to a formula set forth in the terms and conditions adopted under the 2011 Plan; the deferred stock is settled in shares of common stock according to these terms and conditions. During December 31, 2019, 2018 and 2017, there were 1,275, 5,551 and 3,647, respectively, shares of deferred stock awarded under this arrangement, all of which are vested.

Non-employee directors also receive an annual grant of deferred stock (or restricted stock, if they so elect) as additional compensation for board service. The award vests in equal quarterly installments over one year and the vested portion of the deferred stock is settled in shares of common stock either upon a director’s termination of service or three years after the date of grant (which may in most cases be extended at the directors’ election) in accordance with the terms and conditions under the 2011 Plan. During 2019, 2018 and 2017, there were 18,172, 10,152 and 9,857, respectively, shares of deferred stock and 7,407, 6,345 and 9,792, respectively, shares of restricted stock granted under this arrangement, all of which are vested except for 1,666 shares of restricted stock granted in 2018 that were cancelled. We recognized expense of $1.4, $1.9 and $1.4 related to deferred stock in 2019, 2018 and 2017, respectively.

Restricted Stock

We grant restricted stock and restricted stock unit awards to certain employees and to non-employee directors who may elect to receive restricted stock rather than deferred stock as described above. Restrictions lapse over periods ranging up to six years, and in some cases upon retirement. We value restricted stock awards at the closing market value of our common stock on the date of grant.

A summary of restricted stock activity is as follows:

	Shares (000)	Wtd. Avg. Price Per Share	Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value (in millions)
Unvested, January 1, 2017	451	$70	1.4
Granted	167	98
Vested	(133)	79
Forfeited	(37)	80
Unvested, December 31, 2017	448	$77	1.2
Granted	145	$119
Vested	(174)	77
Forfeited	(23)	89
Unvested, December 31, 2018	396	$92	1.3
Granted	236	$84
Vested	(150)	76
Forfeited	(36)	93
Unvested, December 31, 2019	446	$97	1.5	$43

During 2019, 2018 and 2017, we recognized $15.5, $13.3 and $12.3, respectively, of expense related to restricted stock awards. As of December 31, 2019, there was approximately $16.0 of total unrecognized compensation cost related to unvested restricted stock, which we expect to recognize over a weighted-average period of approximately 2.0 years.

Performance Share Units

Our 2011 Plan allows us to grant performance share units. We grant performance share units typically with a performance period of three years. Vesting of units occurs at the end of the performance period or after a subsequent holding period, except in the case of termination of employment where the units are forfeited immediately. Upon retirement, a prorated number of units vest depending on the period worked from the grant date to retirement date or in certain cases all of the units vest. In the case of death or disability, the units immediately vest at the Target Award level if the death or disability date is during the performance period, or at the level determined by the performance criteria met during the performance period if the death or disability occurs during the subsequent holding period. The units are settled in shares of our common stock. A payout multiple is applied to the units awarded based on the performance criteria determined by the Executive Compensation and Human Resources Committee of the Board of Directors at the time of grant.

In the event the performance criteria exceeds the Target Award level, an additional number of shares, up to the Outstanding Award level, may be granted. In the event the performance criteria falls below the Target Award level, a reduced number of shares, as low as the Threshold Award level, may be granted. If the performance criteria falls below the Threshold Award level, no shares will be granted.

A summary of the performance share units detail by grant year is as follows:

	2016		2017		2018		2019
Grant Date(s)	February 16, 2016		February 9, 2017		February 15, 2018		February 15, 2019
Performance Period (years)	2016-2018		2017-2019		2018-2020		2019-2021
Vesting Date	February 2019		February 2020(a)		February 2021(a)		February 2022(a)
Payout Levels (in units):
Threshold Award		65,141		57,563		47,003		68,132
Target Award		130,282		115,125		94,005		136,264
Outstanding Award		260,564		230,250		188,010		272,528
Shares Issued in 2019		125,070		—		—		—
Payout Achieved Over Performance Period		—		88,377		—		—

We recognize and adjust compensation expense based on the likelihood of the performance criteria specified in the award being achieved. The compensation expense is recognized over the performance and holding periods and is recorded in selling and administrative expenses. We have recognized total compensation expense of $5.2, $8.4 and $10.8 in 2019, 2018 and 2017, respectively, related to the performance share units.

Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, € in Millions	1 Months Ended								3 Months Ended				12 Months Ended
	Feb. 29, 2020 USD ($)	Jan. 31, 2020 USD ($)	Apr. 30, 2019 USD ($)	Apr. 30, 2019 EUR (€)	Apr. 30, 2018 USD ($)	Apr. 30, 2018 EUR (€)	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2019 USD ($) Office Country $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Aug. 31, 2019 shares	Mar. 31, 2019	Jan. 01, 2019 USD ($)	Aug. 03, 2018 shares	Jul. 28, 2016 shares
Accounting Policies [Line Items]
Number of offices worldwide (over) \| Office													2,500
Number of countries and territories \| Country													75
Investments value													$ 97,800,000	$ 161,400,000	$ 158,700,000
Unremitted earning from investments													$ 3,400,000	105,200,000
Payment terms													60 days
Description of timing													Our client contracts are generally short-term in nature with a term of one year or less. The timing between satisfaction of the performance obligation, invoicing and payment is not significant.
Deferred revenue													$ 44,500,000	42,800,000
Advertising expenses													25,700,000	27,900,000	26,600,000
Restructuring costs													42,000,000.0	39,300,000	34,500,000
Costs paid, utilized or transferred													50,200,000	37,300,000
Balance at end of year													7,300,000	15,500,000	13,500,000
Consolidated amortization expense related to intangibles													29,800,000	35,100,000	34,600,000
2020													26,600,000
2021													16,200,000
2022													12,800,000
2023													10,000,000.0
2024													7,800,000
Goodwill impairment charge									$ 0		$ 0	$ 0	64,000,000.0
Percentage interest acquired																					51.00%
Percentage of ownership in Swiss franchise																					49.00%
Swiss franchise investment portfolio market value														219,900,000
Swiss franchise realized gains													300,000	12,700,000	14,700,000
Swiss franchise realized losses													200,000	2,100,000	3,800,000
Net capitalized software balance													7,500,000	7,400,000
Amortization expense related to capitalized software cost													$ 2,000,000.0	$ 1,500,000	1,300,000
Shares authorized to be repurchased (in shares) \| shares																				6,000,000.0			6,000,000.0	6,000,000.0
Shares repurchased (in shares) \| shares													2,400,000	5,700,000
Total cost of shares repurchased													$ 203,000,000.0	$ 500,700,000	$ 203,900,000
Dividends declared (in dollars per share) \| $ / shares													$ 2.18	$ 2.02	$ 1.86
Total dividend payments													$ 129,300,000	$ 127,300,000	$ 123,700,000
Net earnings, net of tax, attributable to noncontrolling interests													$ (40,600,000)	$ 42,000,000.0	$ 51,900,000
CICE payroll tax credit														6.00%	7.00%	6.00%	6.00%	6.00%	4.00%
Multiplier for payroll tax credits													2.5
Payment period													3 years
Net proceeds from sale of tax credits			$ 103,500,000	€ 92.0	$ 234,500,000	€ 190.9	$ 143,500,000	€ 133.0
ROU assets													$ 448,500,000
Lease liabilities													458,800,000
Unrecognized losses related to the pension plans													7,400,000
United States Plans \| Subsequent Event
Accounting Policies [Line Items]
Payment for annuities		$ 19,200,000
Settlement of lump sum payments	$ 3,000,000.0
ASU No. 2016-02
Accounting Policies [Line Items]
ROU assets																						$ 458,100,000
Lease liabilities																						$ 458,700,000
Noncontrolling Interests
Accounting Policies [Line Items]
Net earnings, net of tax, attributable to noncontrolling interests													$ (1,800,000)	$ 4,900,000	$ (6,500,000)
August 2019 Authorization
Accounting Policies [Line Items]
Shares remaining authorized for repurchase (in shares) \| shares													6,000,000.0
August 2018 Authorization
Accounting Policies [Line Items]
Shares repurchased (in shares) \| shares														2,900,000
Shares remaining authorized for repurchase (in shares) \| shares													800,000
July 2016 Authorization
Accounting Policies [Line Items]
Shares repurchased (in shares) \| shares														2,800,000	1,900,000
Shares remaining authorized for repurchase (in shares) \| shares													0
Leasehold Improvements
Accounting Policies [Line Items]
Estimated useful lives													lesser of life of asset or expected lease term
Northern Europe \| Germany
Accounting Policies [Line Items]
Goodwill impairment charge										$ 60,200,000
APME \| New Zealand
Accounting Policies [Line Items]
Goodwill impairment charge										$ 3,800,000
Minimum
Accounting Policies [Line Items]
Remaining lease terms													1 month
Minimum \| Furniture, Fixtures, and Autos
Accounting Policies [Line Items]
Estimated useful lives													2 years
Minimum \| Computer Equipment
Accounting Policies [Line Items]
Estimated useful lives													2 years
Minimum \| Discount Rates
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)									0.099
Maximum
Accounting Policies [Line Items]
Remaining lease terms													14 years
Maximum \| Buildings
Accounting Policies [Line Items]
Estimated useful lives													40 years
Maximum \| Furniture, Fixtures, and Autos
Accounting Policies [Line Items]
Estimated useful lives													15 years
Maximum \| Computer Equipment
Accounting Policies [Line Items]
Estimated useful lives													15 years
Maximum \| Discount Rates
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)									0.131
Customer relationships
Accounting Policies [Line Items]
Useful life													14 years
Other
Accounting Policies [Line Items]
Useful life													4 years
Computer software \| Minimum
Accounting Policies [Line Items]
Useful life													3 years
Computer software \| Maximum
Accounting Policies [Line Items]
Useful life													10 years
Euro-denominated notes \| Estimate of fair value measurement \| Significant Other Observable Inputs (Level 2)
Accounting Policies [Line Items]
Carrying value of long-term debt													$ 1,062,500,000	$ 1,052,900,000
Euro-denominated notes \| Carrying value \| Significant Other Observable Inputs (Level 2)
Accounting Policies [Line Items]
Carrying value of long-term debt													1,002,900,000	1,024,600,000
Allowance for doubtful accounts
Accounting Policies [Line Items]
Bad debt expense													21,800,000	23,000,000.0	$ 18,100,000
Write-offs													$ 19,100,000	$ 12,000,000.0	$ 17,600,000

Interest and Other (Income) Expenses, Net - Schedule of Interest and Other (Income) Expenses, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Nonoperating Income Expense [Abstract]
Interest expense	$ 44.4	$ 47.0	$ 49.4
Interest income	(6.0)	(6.0)	(4.8)
Foreign exchange loss	6.7	1.4	0.8
Miscellaneous (income) expense, net	(85.7)	(0.4)	6.5
Interest and other (income) expenses, net	$ (40.6)	$ 42.0	$ 51.9

Goodwill - Schedule of Goodwill Balances by Reporting Unit (Details) - USD ($) $ in Millions	Dec. 31, 2019	Apr. 03, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 1,260.1		$ 1,297.1		$ 1,343.0
Americas \| United States
Goodwill [Line Items]
Goodwill	490.3		476.5	$ 476.5
Americas \| United States \| Jefferson Wells
Goodwill [Line Items]
Goodwill	545.8		532.0
Northern Europe \| Germany
Goodwill [Line Items]
Goodwill	67.2		129.2
Northern Europe \| Netherlands
Goodwill [Line Items]
Goodwill	109.5		112.0
Northern Europe \| United Kingdom
Goodwill [Line Items]
Goodwill	97.3		93.7
Southern Europe
Goodwill [Line Items]
Goodwill		$ 33.8
Southern Europe \| France
Goodwill [Line Items]
Goodwill	67.3		68.9	$ 76.3
Other Reporting Units
Goodwill [Line Items]
Goodwill	310.9		299.2
Reportable segments \| Americas
Goodwill [Line Items]
Goodwill	535.6		519.9		519.2
Reportable segments \| Northern Europe
Goodwill [Line Items]
Goodwill	374.6		435.4		468.1
Reportable segments \| Southern Europe
Goodwill [Line Items]
Goodwill	144.8		112.2		121.9
Reportable segments \| Right Management
Goodwill [Line Items]
Goodwill	$ 62.1		$ 62.1		$ 62.1

Retirement and Deferred Compensation Plans - Schedule of Projected Benefit Payment Estimates (Details) $ in Millions	Dec. 31, 2019 USD ($)
Pension plans
Defined Benefit Plan Disclosure [Line Items]
2020	$ 86.0
2021	35.3
2022	25.6
2023	23.2
2024	25.3
2025–2029	142.0
Total projected benefit payments	337.4
Retiree health care plan
Defined Benefit Plan Disclosure [Line Items]
2020	1.1
2021	1.1
2022	1.1
2023	1.1
2024	1.0
2025–2029	4.7
Total projected benefit payments	$ 10.1

Net Earnings Per Share - Antidilutive Awards (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price (in dollars per share)	$ 99	$ 109	$ 0
Weighted-average remaining life	10 months 24 days	1 year 2 months 12 days	0 days
Share-Based Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the calculation of net earnings per share - diluted (in shares)	401,000	264,000	0

Retirement and Deferred Compensation Plans - Schedule of Fair Value of Pension Plan Assets by Asset Category (Details) - Pension plans - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 214.8	$ 153.9	$ 108.8
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	38.8	36.1	38.7
United States Plans \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.8	6.3
United States Plans \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31.0	29.8
United States Plans \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.8	5.1
United States Plans \| Cash and cash equivalents \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Cash and cash equivalents \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.8	5.1
United States Plans \| Cash and cash equivalents \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.8	6.3
United States Plans \| Mutual funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.8	6.3
United States Plans \| Mutual funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Mutual funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Common stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Common stock \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Common stock \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Common stock \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	25.2	24.7
United States Plans \| Fixed income funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Fixed income funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	25.2	24.7
United States Plans \| Fixed income funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Annuity contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Annuity contract \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Annuity contract \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Annuity contract \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Bonds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Bonds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Bonds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Guaranteed insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Guaranteed insurance contracts \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Guaranteed insurance contracts \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Guaranteed insurance contracts \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Bank loans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0
United States Plans \| Bank loans \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0
United States Plans \| Bank loans \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0
United States Plans \| Bank loans \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0
United States Plans \| Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Insurance contracts \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Insurance contracts \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Insurance contracts \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Real estate funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Real estate funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Real estate funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
United States Plans \| Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Hedge funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Hedge funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Hedge funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Other \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Other \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
United States Plans \| Other \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	655.4	354.1	$ 376.7
Non-United States Plans \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	125.8	66.0
Non-United States Plans \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	314.8	134.2
Non-United States Plans \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	214.8	153.9
Non-United States Plans \| Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.5	35.5
Non-United States Plans \| Cash and cash equivalents \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.5	35.5
Non-United States Plans \| Cash and cash equivalents \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Cash and cash equivalents \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	98.0	30.5
Non-United States Plans \| Mutual funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	98.0	30.5
Non-United States Plans \| Mutual funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Mutual funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Common stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.3
Non-United States Plans \| Common stock \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.3
Non-United States Plans \| Common stock \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans \| Common stock \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans \| Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	160.0	99.4
Non-United States Plans \| Fixed income funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Fixed income funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	160.0	99.4
Non-United States Plans \| Fixed income funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Annuity contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	52.5	46.2
Non-United States Plans \| Annuity contract \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Annuity contract \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Annuity contract \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	52.5	46.2
Non-United States Plans \| Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	37.0
Non-United States Plans \| Bonds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans \| Bonds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	37.0
Non-United States Plans \| Bonds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans \| Guaranteed insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18.5	17.7
Non-United States Plans \| Guaranteed insurance contracts \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Guaranteed insurance contracts \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18.5	17.7
Non-United States Plans \| Guaranteed insurance contracts \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Bank loans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		8.9
Non-United States Plans \| Bank loans \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0
Non-United States Plans \| Bank loans \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		8.9
Non-United States Plans \| Bank loans \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0
Non-United States Plans \| Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	130.6	107.7
Non-United States Plans \| Insurance contracts \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Insurance contracts \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Insurance contracts \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	130.6	107.7
Non-United States Plans \| Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	93.3	8.2
Non-United States Plans \| Real estate funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Non-United States Plans \| Real estate funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	87.3	8.2
Non-United States Plans \| Real estate funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.0	$ 0.0
Non-United States Plans \| Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	29.3
Non-United States Plans \| Hedge funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans \| Hedge funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9.6
Non-United States Plans \| Hedge funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.7
Non-United States Plans \| Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8.4
Non-United States Plans \| Other \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0
Non-United States Plans \| Other \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.4
Non-United States Plans \| Other \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 6.0