ManpowerGroup (MAN) 10-Q 8 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 05, 2021
Cover [Abstract]
Entity Registrant Name	MANPOWERGROUP INC.
Entity Central Index Key	0000871763
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Trading Symbol	MAN
Title of 12(b) Security	Common Stock, $.01 par value
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		54,239,893
Document Quarterly Report	true
Document Transition Report	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Number	1-10686
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 Incorporation, State or Country Code	WI
Entity Address, Postal Zip Code	53212
City Area Code	414
Local Phone Number	961-1000

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 1,612.6	$ 1,567.1
Accounts receivable, less allowance for doubtful accounts of $124.0 and $128.1, respectively	5,091.4	4,912.4
Prepaid expenses and other assets	154.7	186.9
Total current assets	6,858.7	6,666.4
Other Assets:
Goodwill	1,206.6	1,225.8
Intangible assets, less accumulated amortization of $433.3 and $425.4, respectively	232.2	248.6
Operating lease right-of-use assets	360.4	400.7
Other assets	675.6	651.6
Total other assets	2,474.8	2,526.7
Property and Equipment:
Land, buildings, leasehold improvements and equipment	598.3	614.7
Less: accumulated depreciation and amortization	479.5	479.6
Net property and equipment	118.8	135.1
Total assets	9,452.3	9,328.2
Current Liabilities:
Accounts payable	2,829.5	2,527.4
Employee compensation payable	260	231.8
Accrued liabilities	553	602.1
Accrued payroll taxes and insurance	718	752
Value added taxes payable	506	551.1
Short-term borrowings and current maturities of long-term debt	482.9	20.4
Total current liabilities	5,349.4	4,684.8
Other Liabilities:
Long-term debt	582.6	1,103.5
Long-term operating lease liability	268.5	305.1
Other long-term liabilities	768.6	781.2
Total other liabilities	1,619.7	2,189.8
ManpowerGroup shareholders' equity
Preferred stock, $.01 par value, authorized 25,000,000 shares, none issued	0	0
Common stock, $.01 par value, authorized 125,000,000 shares, issued 117,758,023 and 117,555,991 shares, respectively	1.2	1.2
Capital in excess of par value	3,434	3,402.5
Retained earnings	3,591.8	3,388.8
Accumulated other comprehensive loss	(444.6)	(397.3)
Treasury stock at cost, 63,520,656 and 61,990,021 shares, respectively	(4,109)	(3,954.2)
Total ManpowerGroup shareholders’ equity	2,473.4	2,441
Noncontrolling interests	9.8	12.6
Total shareholders’ equity	2,483.2	2,453.6
Total liabilities and shareholders’ equity	$ 9,452.3	$ 9,328.2

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 124	$ 128.1
Other Assets:
Accumulated amortization on intangible assets	$ 433.3	$ 425.4
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)	117,758,023	117,555,991
Treasury stock at cost (in shares)	63,520,656	61,990,021

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenues from services	$ 5,140.6	$ 4,584.8	$ 15,342.1	$ 12,946.1
Cost of services	4,287.6	3,859.7	12,860.9	10,920.3
Gross profit	853	725.1	2,481.2	2,025.8
Selling and administrative expenses, excluding goodwill impairment charge	702.5	663.5	2,062.4	1,909.7
Goodwill impairment charges	0	0	0	66.8
Selling and administrative expenses	702.5	663.5	2,062.4	1,976.5
Operating profit	150.5	61.6	418.8	49.3
Interest and other expenses, net	4.9	6	13.1	32.3
Earnings before income taxes	145.6	55.6	405.7	17
Provision for income taxes	47.9	45.3	134.4	69.4
Net earnings (loss)	$ 97.7	$ 10.3	$ 271.3	$ (52.4)
Net earnings (loss) per share - basic	$ 1.80	$ 0.18	$ 4.96	$ (0.90)
Net earnings (loss) per share - diluted	$ 1.77	$ 0.18	$ 4.90	$ (0.90)
Weighted average shares - basic (in shares)	54.3	58.2	54.7	58.4
Weighted average shares - diluted (in shares)	55.2	58.5	55.4	58.4

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 97.7	$ 10.3	$ 271.3	$ (52.4)
Other comprehensive (loss) income:
Foreign currency translation adjustments	(31.7)	76.7	(99.9)	29.1
Translation adjustments on derivative instruments, net of income taxes of $5.9, $(12.6), $16.1 and $(12.5), respectively	8.7	(25.2)	44.1	(23.8)
Translation adjustments of long-term intercompany loans	(0.5)	(5.8)	5.7	(6.2)
Defined benefit pension plans and retiree health care plan, net of income taxes of $1.5, $0.3, $4.1 and $7.9, respectively	1.2	0.6	2.8	2.5
Pension settlement related to a U.S. plan, net of income taxes of $3.9 for 2020	0	0	0	6.6
Total other comprehensive (loss) income	(22.3)	46.3	(47.3)	8.2
Comprehensive income (loss)	$ 75.4	$ 56.6	$ 224	$ (44.2)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive (Loss) Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other comprehensive (loss) income:
Income tax expense on translation adjustments on derivative instruments	$ 5.9	$ (12.6)	$ 16.1	$ (12.5)
Income tax expense on defined benefit pension plans and retiree health care plan	$ 1.5	$ 0.3	$ 4.1	7.9
Income tax expense on pension plan settlement				$ 3.9

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net earnings (loss)	$ 271.3	$ (52.4)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	50.9	55.4
Non-cash goodwill and other impairment charges	0	71.3
Non-cash operating lease right-of-use assets impairment	0	22.6
Deferred income taxes	(20.5)	5.5
Provision for doubtful accounts	13.7	17.8
Share-based compensation	26.7	18.4
Changes in operating assets and liabilities, excluding the impact of acquisitions:
Accounts receivable	(354)	785.8
Other assets	9.7	(15.1)
Other liabilities	385.1	(193.6)
Cash provided by operating activities	382.9	715.7
Cash Flows from Investing Activities:
Capital expenditures	(39.7)	(30.5)
Acquisition of businesses, net of cash acquired	(7.1)	0
Proceeds from the sale of subsidiaries and property and equipment	2.2	8
Cash used in investing activities	(44.6)	(22.5)
Cash Flows from Financing Activities:
Net change in short-term borrowings	0.1	(30.6)
Proceeds from long-term debt	0.4	2
Repayments of long-term debt	(2.2)	(0.1)
Payments of contingent consideration for acquisitions	(6.2)	(1.7)
Proceeds from share-based awards	5.3	7.4
Payments to noncontrolling interests	(1.2)	(0.8)
Other share-based award transactions	(4.6)	(7.6)
Repurchases of common stock	(150.1)	(63.8)
Dividends paid	(68.3)	(63.2)
Cash used in financing activities	(226.8)	(158.4)
Effect of exchange rate changes on cash	(66)	27.1
Change in cash and cash equivalents	45.5	561.9
Cash and cash equivalents, beginning of period	1,567.1	1,025.8
Cash and cash equivalents, end of period	1,612.6	1,587.7
Supplemental Cash Flow Information:
Interest Paid	33.4	35.5
Income taxes paid, net	114.3	118.9
Non-cash operating activity: Right-of-use assets obtained in exchange for new operating lease liabilities	$ 35.9	$ 56.1

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Non-Controlling Interests
Balance, beginning of period at Dec. 31, 2019	$ 2,761.5	$ 1.2	$ 3,370.6	$ 3,494.1	$ (441)	$ (3,681.9)	$ 18.5
Balance, beginning of period (in shares) at Dec. 31, 2019		117,190,883
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	1.7			1.7
Other comprehensive income (loss)	(64.8)				(64.8)
Issuances under equity plans	(0.5)		5.9			(6.4)
Issuances under equity plans (in shares)		293,298
Share-based compensation expense	4.6		4.6
Repurchases of common stock	(63.8)					(63.8)
Noncontrolling interest transactions	0.3						0.3
Balance, end of period at Mar. 31, 2020	2,639	$ 1.2	3,381.1	3,495.8	(505.8)	(3,752.1)	18.8
Balance, end of period (in shares) at Mar. 31, 2020		117,484,181
Balance, beginning of period at Dec. 31, 2019	2,761.5	$ 1.2	3,370.6	3,494.1	(441)	(3,681.9)	18.5
Balance, beginning of period (in shares) at Dec. 31, 2019		117,190,883
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(52.4)
Other comprehensive income (loss)	8.2
Balance, end of period at Sep. 30, 2020	2,605.4	$ 1.2	3,395.1	3,378.5	(432.8)	(3,753.3)	16.7
Balance, end of period (in shares) at Sep. 30, 2020		117,543,804
Balance, beginning of period at Mar. 31, 2020	2,639	$ 1.2	3,381.1	3,495.8	(505.8)	(3,752.1)	18.8
Balance, beginning of period (in shares) at Mar. 31, 2020		117,484,181
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(64.4)			(64.4)
Other comprehensive income (loss)	26.7				26.7
Issuances under equity plans	(0.2)					(0.2)
Issuances under equity plans (in shares)		14,898
Share-based compensation expense	6.9		6.9
Dividends	(63.2)			(63.2)
Noncontrolling interest transactions	(2)						(2)
Balance, end of period at Jun. 30, 2020	2,542.8	$ 1.2	3,388	3,368.2	(479.1)	(3,752.3)	16.8
Balance, end of period (in shares) at Jun. 30, 2020		117,499,079
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	10.3			10.3
Other comprehensive income (loss)	46.3				46.3
Issuances under equity plans	(0.8)		0.2			(1)
Issuances under equity plans (in shares)		44,725
Share-based compensation expense	6.9		6.9
Noncontrolling interest transactions	(0.1)						(0.1)
Balance, end of period at Sep. 30, 2020	2,605.4	$ 1.2	3,395.1	3,378.5	(432.8)	(3,753.3)	16.7
Balance, end of period (in shares) at Sep. 30, 2020		117,543,804
Balance, beginning of period at Dec. 31, 2020	2,453.6	$ 1.2	3,402.5	3,388.8	(397.3)	(3,954.2)	12.6
Balance, beginning of period (in shares) at Dec. 31, 2020		117,555,991
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	62			62
Other comprehensive income (loss)	(40.5)				(40.5)
Issuances under equity plans	(3.6)		1			(4.6)
Issuances under equity plans (in shares)		169,192
Share-based compensation expense	7.5		7.5
Repurchases of common stock	(100.1)					(100.1)
Noncontrolling interest transactions	(1.5)						(1.5)
Balance, end of period at Mar. 31, 2021	2,377.4	$ 1.2	3,411	3,450.8	(437.8)	(4,058.9)	11.1
Balance, end of period (in shares) at Mar. 31, 2021		117,725,183
Balance, beginning of period at Dec. 31, 2020	2,453.6	$ 1.2	3,402.5	3,388.8	(397.3)	(3,954.2)	12.6
Balance, beginning of period (in shares) at Dec. 31, 2020		117,555,991
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	271.3
Other comprehensive income (loss)	(47.3)
Balance, end of period at Sep. 30, 2021	2,483.2	$ 1.2	3,434	3,591.8	(444.6)	(4,109)	9.8
Balance, end of period (in shares) at Sep. 30, 2021		117,758,023
Balance, beginning of period at Mar. 31, 2021	2,377.4	$ 1.2	3,411	3,450.8	(437.8)	(4,058.9)	11.1
Balance, beginning of period (in shares) at Mar. 31, 2021		117,725,183
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	111.6			111.6
Other comprehensive income (loss)	15.5				15.5
Issuances under equity plans	2.6		2.7			(0.1)
Issuances under equity plans (in shares)		25,653
Share-based compensation expense	9.4		9.4
Dividends	(68.3)			(68.3)
Repurchases of common stock	(50)					(50)
Noncontrolling interest transactions	(1.5)						(1.5)
Balance, end of period at Jun. 30, 2021	2,396.7	$ 1.2	3,423.1	3,494.1	(422.3)	(4,109)	9.6
Balance, end of period (in shares) at Jun. 30, 2021		117,750,836
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	97.7			97.7
Other comprehensive income (loss)	(22.3)				(22.3)
Issuances under equity plans	1.1		1.1
Issuances under equity plans (in shares)		7,187
Share-based compensation expense	9.8		9.8
Noncontrolling interest transactions	0.2						0.2
Balance, end of period at Sep. 30, 2021	$ 2,483.2	$ 1.2	$ 3,434	$ 3,591.8	$ (444.6)	$ (4,109)	$ 9.8
Balance, end of period (in shares) at Sep. 30, 2021		117,758,023

Basis of Presentation and Accou

Basis of Presentation and Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Accounting Policies	(1) Basis of Presentation and Accounting Policies Basis of Presentation Certain information and footnote disclosures normally included in the financial statements prepared in accordance with United States Generally Accepted Accounting Principles ("GAAP") have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, although we believe that the disclosures are adequate to make the information presented not misleading. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements included in our 2020 Annual Report on Form 10-K. The information furnished reflects all adjustments that, in the opinion of management, were necessary for a fair statement of the Consolidated Financial Statements for the periods presented. Such adjustments were of a normal recurring nature, unless otherwise disclosed. COVID-19 The global spread of COVID-19, which was declared a global pandemic by the World Health Organization in March 2020, has created significant volatility, uncertainty and global macroeconomic disruption. The COVID-19 crisis began to negatively impact our business, operations and consolidated financial statements during the last two weeks of March 2020, with significant lockdown measures implemented by the end of March 2020 in our main markets in Europe and North America, as well as in certain other countries. We continued to experience the negative impacts of the COVID-19 crisis in the third quarter of 2021, particularly related to the impact on supply chains and labor shortages as we believe certain parts of the workforce did not return to the labor market in many industries and markets over concerns about the COVID-19 Delta variant. Although many markets strengthened throughout the first nine months of 2021, the COVID-19 crisis had an adverse effect of curtailing economic activity in certain markets, affecting demand for our services. Continued uncertainty remains as to the future impact of the pandemic on global and local economies. We continue to monitor and assess the impacts that the COVID-19 pandemic may have on our financial condition, liquidity and future results of operations. However, we cannot predict with certainty what the impact will be on future periods. For further information on the impacts of COVID-19 on our business, operations and financial results, see Part I, Item 2: Management’s Discussion and Analysis of Financial Condition and Results of Operations. Allowance for Doubtful Accounts We have an allowance for doubtful accounts recorded as an estimate of the accounts receivable that may not be collected. This allowance is calculated on an entity-by-entity basis with consideration of historical write-off experience, age of receivables, market conditions, 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. A rollforward of our allowance for doubtful accounts is shown below: Nine Months Ended Balance, December 31, 2020 $ 128.1 Provisions charged to earnings 13.7 Write-offs ( 11.7 ) Translation adjustments ( 6.3 ) Reclassifications and other 0.2 Balance, September 30, 2021 $ 124.0 Leases We determine whether a contract is or contains a lease at contract inception. Right-of-use (“ROU”) assets and long-term lease liabilities are presented as separate line items on our Consolidated Balance Sheets. Current operating lease liabilities are included in accrued expenses on our Consolidated Balance Sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Lease liabilities are recognized at commencement date based on the present value of remaining lease payments over the lease term. As the rate implicit in the lease is not readily determinable in most of our leases, we use our incremental borrowing rate. We determine our incremental borrowing rate at the commencement date using our unsecured borrowing rate, adjusted for collateralization, lease term, economic environment, currency and other factors. ROU assets are recognized at commencement date at the value of the related lease liabilities, adjusted for any prepayments, lease incentives received, and initial direct costs incurred. Our lease terms include options to renew or not terminate the lease when it is reasonably certain that we will exercise that option. Lease expenses for operating leases are recognized on a straight-line basis over the lease term and recorded in selling and administrative expenses on the Consolidated Statements of Operations. Goodwill Impairment In accordance with the accounting guidance on goodwill, we perform an annual impairment test of goodwill at our reporting unit 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 evaluate the recoverability of goodwill utilizing an income approach that estimates the fair value of the future discounted cash flows to which the goodwill relates. This approach reflects management’s internal outlook of the reporting units, which is believed to be the best determination of value due to management’s insight and experience with the reporting units. Significant assumptions used in our goodwill impairment tests include: expected future revenue growth rates, operating unit profit margins, working capital levels, discount rates, and a terminal value multiple. We performed our annual impairment test of our goodwill and indefinite-lived intangible assets during the third quarter of 2021 and determined that there was no impairment of our goodwill or indefinite-lived intangible assets. The table below provides our reporting units’ estimated fair values and carrying values, determined as part of our annual goodwill impairment test performed in the third quarter, representing approximately 80% of our consolidated goodwill balance as of September 30, 2021. (in millions) France United States United Kingdom Canada Sweden Netherlands Estimated fair values $ 3,130.8 $ 1,480.2 $ 412.0 $ 203.5 $ 150.1 $ 130.5 Carrying values 1,358.2 912.4 335.4 103.9 85.4 123.7 The fair value of each reporting unit was at least 20 % in excess of the respective reporting unit’s carrying value with the exception of the Netherlands reporting unit, which is part of the Northern Europe segment. The Netherlands reporting unit had a fair value that exceeded its carrying value by approximately 5.5 %. Key assumptions included in the Netherlands discounted cash flow valuation performed during the third quarter of 2021 included a discount rate of 10.4 %, revenue growth for the next three years ranging from 3.0 % - 5.0 %, a terminal value revenue growth rate of 2.0 %, and a terminal value OUP margin of 3.5 %. If the Netherlands reporting cannot meet its operating targets and/or recover from the deteriorated macroeconomic, industry, and market conditions, it may not achieve the growth and margin assumptions noted above and some or all of the recorded goodwill for the Netherlands reporting unit, which was $ 114.2 as of September 30, 2021, could be subject to impairment. While our other reporting units' fair values exceeded 20 % or more of their respective carrying values, given the uncertainty of the financial impacts from the COVID-19 pandemic, there could be significant further decreases in the operating results of our reporting units for a sustained period, which may result in a recognition of goodwill impairment that could be material to the Consolidated Financial Statements. Subsequent Events On October 1, 2021, we acquired ettain group, one of the largest privately held IT resourcing and services providers in North America. Effective that date, ettain group became part of our Experis business in the Americas segment. The aggregate cash consideration paid was $ 930.9 . Of the total consideration paid, $ 925.0 was for the acquired interests and the remaining $ 5.9 was for the excess working capital and cash. The transaction was funded with cash on hand and a $ 150.0 draw on our revolving credit facility on October 1, 2021. We expect to finalize the net working capital adjustments in the fourth quarter of 2021. The acquisition of ettain group will be accounted for as a business combination and the assets and liabilities of ettain group will be included in the Consolidated Balance Sheets as of the acquisition date, and its performance will be included in the Consolidated Statements of Operations subsequent to the acquisition date. The major classes of assets and liabilities of ettain group are expected to be cash and cash equivalents, accounts receivable, current and long-term liabilities, deferred taxes, and goodwill and other amortizable intangible assets.

Recent Accounting Standards

Recent Accounting Standards	9 Months Ended
	Sep. 30, 2021
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Standards	(2) Recent Accounting Standards Accounting Standards Effective as of January 1, 2021 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 was effective for us as of January 1, 2021 . The adoption of this guidance did not have a material impact on our Consolidated Financial Statements. In January 2020, the FASB issued new guidance on equity method investments. The guidance clarifies the interactions between the existing accounting standards on equity securities, equity method and joint ventures, and derivatives and hedging. The new guidance addresses accounting for the transition into and out of the equity method and measuring certain purchased options and forward contracts to acquire investments. The new guidance was effective for us as of January 1, 2021 . The adoption of this guidance did not have a material impact on our Consolidated Financial Statements. Recently Issued Accounting Standards In March 2020, the FASB issued new guidance on accounting for contract modifications, including hedging relationships, due to the transition from LIBOR and other interbank offerings related to alternative reference interest rates. The guidance is effective upon issuance and can be applied to applicable contract modifications through December 31, 2022. The adoption of this guidance has not had a material impact on our Consolidated Financial Statements, and we do not expect it to have a material impact going forward.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue Recognition	(3) Revenue Recognition 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. 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 September 30, 2021, related to remaining performance obligations, which are not material. 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 $ 30.5 as of September 30, 2021 and $ 34.9 as of December 31, 2020. In the following table, revenue is disaggregated by service types for each of our reportable segments. See Note 2 to the Consolidated Financial Statements in our 2020 Annual Report on Form 10-K for descriptions of revenue service types. Three Months Ended September 30, 2021 2020 Staffing Outcome- Permanent Other Total Staffing Outcome- Permanent Other Total Americas: United States $ 525.0 $ 46.1 $ 40.4 $ 33.4 $ 644.9 $ 478.2 $ 33.0 $ 21.3 $ 46.3 $ 578.8 Other Americas 328.8 12.6 9.7 1.6 352.7 332.0 10.9 4.0 3.4 350.3 853.8 58.7 50.1 35.0 997.6 810.2 43.9 25.3 49.7 929.1 Southern Europe: France 1,220.0 79.6 12.7 4.7 1,317.0 1,119.8 72.4 9.8 3.3 1,205.3 Italy 432.4 8.7 11.0 4.3 456.4 335.1 7.0 6.0 3.1 351.2 Other Southern Europe 501.8 90.6 14.0 2.8 609.2 456.8 87.0 8.7 3.4 555.9 2,154.2 178.9 37.7 11.8 2,382.6 1,911.7 166.4 24.5 9.8 2,112.4 Northern Europe 1,049.3 62.4 37.0 17.9 1,166.6 845.7 63.2 22.2 16.6 947.7 APME 461.2 103.7 36.0 10.3 611.2 469.3 86.0 30.0 10.3 595.6 4,518.5 403.7 160.8 75.0 5,158.0 4,036.9 359.5 102.0 86.4 4,584.8 Intercompany Eliminations ( 17.4 ) — Total $ 5,140.6 $ 4,584.8 Nine Months Ended September 30, 2021 2020 Staffing Outcome- Permanent Other Total Staffing Outcome- Permanent Other Total Americas: United States $ 1,562.1 $ 108.4 $ 100.8 $ 111.2 $ 1,882.5 $ 1,425.9 $ 93.6 $ 62.1 $ 124.0 $ 1,705.6 Other Americas 1,097.5 33.5 23.7 7.6 1,162.3 1,018.7 30.6 12.6 9.2 1,071.1 2,659.6 141.9 124.5 118.8 3,044.8 2,444.6 124.2 74.7 133.2 2,776.7 Southern Europe: France 3,545.1 249.7 40.5 17.4 3,852.7 2,781.5 213.0 29.7 10.9 3,035.1 Italy 1,257.3 24.6 32.5 13.9 1,328.3 897.2 20.7 19.0 10.5 947.4 Other Southern Europe 1,458.2 277.5 38.9 9.7 1,784.3 1,253.3 252.6 30.1 9.4 1,545.4 6,260.6 551.8 111.9 41.0 6,965.3 4,932.0 486.3 78.8 30.8 5,527.9 Northern Europe 3,135.7 193.8 102.6 58.8 3,490.9 2,563.6 198.5 73.1 46.7 2,881.9 APME 1,407.5 304.2 113.2 33.6 1,858.5 1,386.5 250.9 95.1 27.1 1,759.6 13,463.4 1,191.7 452.2 252.2 15,359.5 11,326.7 1,059.9 321.7 237.8 12,946.1 Intercompany Eliminations ( 17.4 ) — Total $ 15,342.1 $ 12,946.1 In the following table, revenue is disaggregated by timing of revenue recognition for each of our reportable segments: Three Months Ended September 30, 2021 2020 Services Services Total Services Services Total Americas: United States $ 623.2 $ 21.7 $ 644.9 $ 567.6 $ 11.2 $ 578.8 Other Americas 346.6 6.1 352.7 347.6 2.7 350.3 969.8 27.8 997.6 915.2 13.9 929.1 Southern Europe: France 1,305.5 11.5 1,317.0 1,196.4 8.9 1,205.3 Italy 446.3 10.1 456.4 345.6 5.6 351.2 Other Southern Europe 598.0 11.2 609.2 548.6 7.3 555.9 2,349.8 32.8 2,382.6 2,090.6 21.8 2,112.4 Northern Europe 1,135.1 31.5 1,166.6 928.3 19.4 947.7 APME 590.5 20.7 611.2 579.1 16.5 595.6 5,045.2 112.8 5,158.0 4,513.2 71.6 4,584.8 Intercompany Eliminations ( 17.4 ) — Total $ 5,140.6 $ 4,584.8 Nine Months Ended September 30, 2021 2020 Services Services Total Services Services Total Americas: United States $ 1,829.6 $ 52.9 $ 1,882.5 $ 1,673.0 $ 32.6 $ 1,705.6 Other Americas 1,147.2 15.1 1,162.3 1,062.9 8.2 1,071.1 2,976.8 68.0 3,044.8 2,735.9 40.8 2,776.7 Southern Europe: France 3,815.5 37.2 3,852.7 3,008.0 27.1 3,035.1 Italy 1,297.9 30.4 1,328.3 929.7 17.7 947.4 Other Southern Europe 1,752.5 31.8 1,784.3 1,520.1 25.3 1,545.4 6,865.9 99.4 6,965.3 5,457.8 70.1 5,527.9 Northern Europe 3,402.0 88.9 3,490.9 2,818.3 63.6 2,881.9 APME 1,796.7 61.8 1,858.5 1,707.9 51.7 1,759.6 15,041.4 318.1 15,359.5 12,719.9 226.2 12,946.1 Intercompany Eliminations ( 17.4 ) — Total $ 15,342.1 $ 12,946.1

Share-Based Compensation Plans

Share-Based Compensation Plans	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-Based Compensation Plans	(4) Share-Based Compensation Plans During the three months ended September 30, 2021 and 2020 , we recognized share-based compensation expense of $ 9.8 and $ 6.9 , respectively, and $ 26.7 and $ 18.4 for the nine months ended September 30, 2021 and 2020 , respectively. The expense relates to stock options, deferred stock, restricted stock and performance share units. We recognize share-based compensation expense in selling and administrative expenses on a straight-line basis over the service period of each award. Consideration received from share-based awards was $ 5.3 and $ 7.4 for the nine months ended September 30, 2021 and 2020 , respectively.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Acquisitions	(5) Acquisitions and Dispositions From time to time, we acquire and invest in companies throughout the world, including franchises. For the nine months ended September 30, 2021 and 2020 , the total cash consideration paid for acquisitions, net of cash acquired, was $ 13.3 and $ 1.7 , respectively. The 2021 payments mainly related to franchise acquisitions in the United States and a contingent consideration payment associated with a previous acquisition. The 2020 payment represents a deferred consideration payment related to a previous acquisition. Occasionally, we dispose of parts of our operations to optimize our global strategic and geographic footprint and synergies. On September 30, 2020 we disposed of four businesses (Serbia, Croatia, Slovenia, Bulgaria) in our Southern Europe segment for net proceeds of $ 5.8 , subject to normal post close working capital adjustments and simultaneously entered into franchise agreements with the new ownership of these businesses. In connection with the disposition we recognized a one-time loss on disposition of $ 5.8 , which was included in the selling and administrative expenses in the Consolidated Statement of Operations for the three and nine months ended September 30, 2020.

Restructuring Costs

Restructuring Costs	9 Months Ended
	Sep. 30, 2021
Restructuring and Related Activities [Abstract]
Restructuring Costs	(6) Restructuring Costs We recorded net restructuring costs of $ 5.3 and $ 98.1 during the nine months ended September 30, 2021 and 2020, respectively, in selling and administrative expenses, primarily related to severances and office closures and consolidations in multiple countries and territories. During the nine months ended September 30, 2021, we made payments o f $ 32.5 out of our restructuring reserve. We expect a majority of the remainin g $ 18.9 r eserve will be paid by the end of 2021. Changes in the restructuring reserve by reportable segment and Corporate are shown below. Americas (1) Southern (2) Northern APME Corporate Total Balance, January 1, 2021 $ 1.9 $ 3.5 $ 40.7 $ — $ — $ 46.1 Severance costs 5.3 — — — — 5.3 Costs paid or utilized ( 4.2 ) ( 2.3 ) ( 26.0 ) — — ( 32.5 ) Balance, September 30, 2021 $ 3.0 $ 1.2 $ 14.7 $ — $ — $ 18.9 (1) Balances related to the United States were $ 1.4 and $ 0.4 as of December 31, 2020 and September 30, 2021 , respectively. (2) Balances related to France were $ 0.6 as of both December 31, 2020 and September 30, 2021 . Balances related to Italy were $ 1.4 and $ 0.5 as of December 31, 2020 and September 30, 2021 , respectively.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	(7) Income Taxes We recorded income tax expense at an effective rate of 32.9 % for the three months ended September 30, 2021, as compared to an effective rate of 81.5 % for the three months ended September 30, 2020. The 2020 rate was unfavorably impacted by the relatively low level and mix of pre-tax earnings and a discrete valuation allowance in Germany. The 2021 rate was favorably impacted by the scheduled reduction in the French corporate tax rate to 27.5 %, the enacted 50 % reduction in the French business tax rate, and a higher level of pre-tax earnings. The 32.9% effective tax rate for the three months ended September 30, 2021 was higher than the United States Federal statutory rate of 21 % primarily due to the French business tax, tax losses in certain countries for which we did not recognize a corresponding tax benefit due to valuation allowances, and the overall mix of earnings. We recorded income tax expense at an effective rate of 33.1 % for the nine months ended September 30, 2021, as compared to an effective rate of 407.4 % for the nine months ended September 30, 2020. The 2020 rate was unfavorably impacted by the relatively low level and mix of pre-tax earnings, the non-deductible goodwill impairment charge in Germany, and a discrete valuation allowance in Germany. The 2021 rate was favorably impacted by the scheduled reduction in the French corporate tax rate to 27.5 %, the enacted 50 % reduction in the French business tax rate, and a higher level of pre-tax earnings. The 33.1% effective tax rate for the nine months ended September 30, 2021 was higher than the United States Federal statutory rate of 21 % primarily due to the French business tax, tax losses in certain countries for which we did not recognize a corresponding tax benefit due to valuation allowances, and the overall mix of earnings. As of September 30, 2021, we had gross unrecognized tax benefits related to various tax jurisdictions, including interest and penalties, of $ 68.0 that would favorably impact the effective tax rate if recognized. As of December 31, 2020, we had gross unrecognized tax benefits related to various tax jurisdictions, including interest and penalties, of $ 64.5 . We do not expect our unrecognized tax benefits to change significantly over the next 12 months. 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 2014 through 2021 for our major operations in France, Italy, the United Kingdom, and the United States. As of September 30, 2021, we were subject to tax audits in Austria, Denmark, France, Germany, Netherlands, and the United States. We believe that the resolution of these audits will not have a material impact on earnings.

Net Earnings (Loss) Per Share

Net Earnings (Loss) Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Net Earnings (Loss) Per Share	(8) Net Earnings (Loss) Per Share The calculations of net earnings (loss) per share - basic and net earnings (loss) per share - diluted were as follows: Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Net earnings (loss) available to common shareholders $ 97.7 $ 10.3 $ 271.3 $ ( 52.4 ) Weighted-average common shares outstanding (in millions) Weighted-average common shares outstanding - basic 54.3 58.2 54.7 58.4 Effect of dilutive securities - stock options 0.2 — 0.1 — Effect of other share-based awards 0.7 0.3 0.6 — Weighted-average common shares outstanding - diluted 55.2 58.5 55.4 58.4 Net earnings (loss) per share - basic $ 1.80 $ 0.18 $ 4.96 $ ( 0.90 ) Net earnings (loss) per share - diluted $ 1.77 $ 0.18 $ 4.90 $ ( 0.90 ) There were 0.1 million and 0.7 million share-based awards excluded from the calculation of net earnings (loss) per share - diluted for the three months ended September 30, 2021 and 2020 , respectively, because their impact was anti-dilutive. There were 0.2 million and 1.5 million share-based awards excluded from the calculation of net earnings (loss) per share - diluted for the nine months ended September 30, 2021 and 2020 , respectively, because their impact was anti-dilutive. Due to the net loss for the nine months ended September 30, 2020, the assumed exercise of share-based awards had an anti-dilutive effect and therefore were not included in the calculations of net loss per share - diluted for the nine months ended September 30, 2020.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	(9) Goodwill and Other Intangible Assets We have goodwill, finite-lived intangible assets and indefinite-lived intangible assets as follows: September 30, 2021 December 31, 2020 Gross Accumulated Net Gross Accumulated Net Goodwill (1) $ 1,206.6 $ — $ 1,206.6 $ 1,225.8 $ — $ 1,225.8 Intangible assets: Finite-lived: Customer relationships 465.1 $ 415.5 $ 49.6 $ 473.0 $ 403.8 $ 69.2 Other 22.7 17.8 4.9 21.9 21.6 0.3 487.8 433.3 54.5 494.9 425.4 69.5 Indefinite-lived: Tradenames (2) 52.0 — 52.0 52.0 — 52.0 Reacquired franchise rights 125.7 — 125.7 127.1 — 127.1 177.7 — 177.7 179.1 — 179.1 Total intangible assets $ 665.5 $ 433.3 $ 232.2 $ 674.0 $ 425.4 $ 248.6 (1) Balances were net of accumulated impairment loss of $ 644.2 as of both September 30, 2021 and December 31, 2020. (2) Balances were net of accumulated impairment loss of $ 139.5 as o f both September 30, 2021 and December 31, 2020. Total consolidated amortization expense related to intangible assets for the remainder of 2021 is expected to be $ 3.4 and in each of the next five years as follows: 2022 - $ 13.1 , 2023 - $ 10.5 , 2024 - $ 8.1 , 2025 - $ 6.0 and 2026 - $ 2.2 . Changes in the carrying value of goodwill by reportable segment and Corporate were as follows: Americas (1) Southern (2) Northern APME Corporate (3) Total Balance, December 31, 2020 $ 536.6 $ 154.9 $ 326.6 $ 81.7 $ 126.0 $ 1,225.8 Acquisitions 3.1 — — — — 3.1 Currency impact ( 0.4 ) ( 7.5 ) ( 10.5 ) ( 3.9 ) — ( 22.3 ) Balance, September 30, 2021 $ 539.3 $ 147.4 $ 316.1 $ 77.8 $ 126.0 $ 1,206.6 (1) Balances related to the United States were $ 490.2 an d $ 493.3 a s of December 31, 2020 and September 30, 2021, respectively. (2) Balances related to France were $ 73.3 and $69.5 as of December 31, 2020 and September 30, 2021 , respectively. Balances related to Italy were $ 4.2 and $ 4.0 as of December 31, 2020 and September 30, 2021, respectively. (3) The majority of the Corporate balance relates to goodwill attributable to our acquisitions of Right Management ($ 62.1 ) and Jefferson Wells ($ 55.5 ). Jefferson Wells is part of the United States reporting unit. Right Management is allocated to the reporting units of the countries in which Right Management operates. For purposes of monitoring our total assets by segment, we do not allocate the Corporate balances to the respective reportable segments as this is commensurate with how we operate our business. We do, however, include these balances within the appropriate reporting units for our goodwill impairment testing. See table below for the breakout of goodwill balances by reporting unit. Goodwill balances by reporting unit were as follows: September 30, December 31, 2021 2020 United States $ 572.1 $ 545.7 Netherlands 114.2 119.3 United Kingdom 110.3 100.2 France 75.6 73.3 Sweden 42.1 43.6 Other reporting units (1) 292.3 343.7 Total goodwill $ 1,206.6 $ 1,225.8 (1) As of July 1, 2021, balances pertaining to Right Management entities were allocated to corresponding reporting units.

Retirement Plans

Retirement Plans	9 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Retirement Plans	(10) Retirement Plans The components of the net periodic benefit cost (credit) for our plans were as follows: Defined Benefit Pension Plan 3 Months Ended 9 Months Ended September 30, September 30, 2021 2020 2021 2020 Service cost $ 5.5 $ 5.3 $ 16.6 $ 15.5 Interest cost 1.5 2.4 4.6 7.0 Expected return on assets ( 3.1 ) ( 3.4 ) ( 9.2 ) ( 10.0 ) Settlement loss — — — 10.2 Other 1.4 0.9 4.1 2.5 Total benefit cost $ 5.3 $ 5.2 $ 16.1 $ 25.2 Retiree Health Care Plan 3 Months Ended 9 Months Ended September 30, September 30, 2021 2020 2021 2020 Interest cost $ 0.1 $ 0.1 $ 0.2 $ 0.3 Prior service credit ( 0.2 ) ( 0.1 ) ( 0.6 ) ( 0.5 ) Other — — 0.1 — Total benefit credit $ ( 0.1 ) $ — $ ( 0.3 ) $ ( 0.2 ) During the three and nine months ended September 30, 2021 , contributions made to our pension plans were $ 5.1 and $ 14.5 , respectively, and contributions made to our retiree health care plan were $ 0.2 and $ 0.8 , respectively. During 2021 , we expect to make total contributions of approximately $ 16.0 to our pension plans and to fund our retiree health care payments as incurred. Pension Settlement During the nine months ended September 30, 2020 , we fully settled our United States Qualified Retirement Plan (the “Plan”) liability. We purchased annuities of $ 19.2 and settled lump sum payments of $ 3.2 from the Plan in January and February 2020, respectively. The completion of lump sum payments in February and transfer of remaining participants to the Pension Benefit Guarantee Corporation (PBGC) in March triggered final settlement of the plan. Upon settlement of the pension liability, we reclassified the related pension losses of $ 6.6 , net of tax, recorded in accumulated other comprehensive loss to the Consolidated Statements of Comprehensive (Loss) Income. The total amount of the required payout to plan participants was determined based on employee elections and market conditions at the time of settlement. The standard PBGC audit was completed in March 2021, and the remaining plan assets of $ 16.6 which were in excess of the pension liability upon settlement are being utilized to fund qualified 401(k) plan contributions in current and future years.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Shareholders' Equity	(11) Shareholders’ Equity The components of accumulated other comprehensive loss, net of tax, were as follows: September 30, December 31, 2021 2020 Foreign currency translation $ ( 172.0 ) $ ( 72.1 ) Translation loss on derivative instruments, net of income tax benefit of $( 18.8 ) and $( 34.9 ), respectively ( 37.1 ) ( 81.2 ) Translation loss on long-term intercompany loans ( 127.6 ) ( 133.3 ) Defined benefit pension plans, net of income tax benefit of $( 34.0 ) and $( 38.2 ), respectively ( 108.2 ) ( 111.4 ) Retiree health care plan, net of income taxes of $ 1.7 and $ 1.8 , respectively 0.3 0.7 Accumulated other comprehensive loss $ ( 444.6 ) $ ( 397.3 ) Noncontrolling Interests Noncontrolling interests, reported 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, net in our Consolidated Statements of Operations. We recorded an expense of $ 0.1 in both the three months ended September 30, 2021 and 2020, and income of $ 1.0 and $ 0.9 in the nine months ended September 30, 2021 and 2020, respectively. Dividends The Board of Directors declared a semi-annual dividend of $ 1.26 and $ 1.09 per share, respectively, on May 7, 2021 and May 8, 2020 . The 2021 dividends were paid on June 15, 2021 to shareholders of record as of June 1, 2021 . The 2020 dividends were paid on June 15, 2020 to shareholders of record as of June 1, 2020 . Share Repurchases In August 2021, the Board of Directors authorized the repurchase of 4.0 million shares of our common stock, with terms consistent with the previous authorizations. This authorization was in addition to the August 2019 and 2018 Board authorizations to purchase 6.0 million shares of our common stock each. 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. During the nine months ended September 30, 2021, we repurchased a total of 1.5 million shares under the 2019 authorization at a cost of $ 150.1 . During the nine months ended September 30, 2020, we repurchased a total of 0.9 million shares comprised of 0.8 million shares under the 2018 authorization and 0.1 million shares under the 2019 authorization, at a total cost of $ 63.8 . The 2021 repurchases all occurred within the first half of 2021, and the 2020 repurchases all occurred within the first quarter of 2020. As of September 30, 2021 , there were 4.0 million and 1.9 million shares remaining authorized for repurchase under the 2021 authorization and 2019 authorization, respectively, and no shares remaining authorized for repurchase under the 2018 authorization.

Interest and Other Expenses, Ne

Interest and Other Expenses, Net	9 Months Ended
	Sep. 30, 2021
Other Nonoperating Income (Expense) [Abstract]
Interest and Other Expenses, Net	(12) Interest and Other Expenses, Net Interest and other expenses, net consisted of the following: Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Interest expense $ 9.6 $ 10.8 $ 29.5 $ 32.3 Interest income ( 2.9 ) ( 3.1 ) ( 9.1 ) ( 9.9 ) Foreign exchange loss 1.4 0.6 4.5 4.2 Miscellaneous (income) expense, net (1) ( 3.2 ) ( 2.3 ) ( 11.8 ) 5.7 Interest and other expenses, net $ 4.9 $ 6.0 $ 13.1 $ 32.3 (1) Miscellaneous expense, net for the nine months ended September 30, 2020 includes a $ 10.2 pension settlement loss related to one of our United States plans. See Note 10 to the Consolidated Financial Statements for further information.

Derivative Financial Instrument

Derivative Financial Instruments and Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments and Fair Value Measurements	(13) Derivative Financial Instruments and Fair Value Measurements 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 foreign currency forward exchange contracts and cross-currency swaps 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, 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 ($ 462.8 ) notes due September 2022 and the € 500.0 ($ 575.6 ) notes due June 2026 were designated as a hedge of our net investment in our foreign subsidiaries with a Euro-functional currency as of September 30, 2021. 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 effect of our net investment hedges on AOCI for the three and nine months ended September 30, 2021 and 2020 was as follows: Gain (Loss) Recognized in Other Comprehensive Income Three Months Ended September 30, Nine Months Ended September 30, Instrument 2021 2020 2021 2020 Euro Notes $ 24.6 $ ( 43.8 ) $ 57.0 $ ( 45.7 ) Cross-currency swaps 1.6 ( 11.3 ) 14.9 ( 8.9 ) 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 AOCI 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 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 use forward currency exchange contracts to hedge the changes in cash flows of certain operational expenses denominated in foreign currency due to changes in foreign currency exchange rates. The changes in fair value of the forward currency exchange contracts derivatives are recorded in AOCI and reclassified into earnings when the underlying operating expense is recognized in earnings. In September 2021, we entered into a series of forward currency exchange contracts denominated in GBP. The economic effect of the forward is to eliminate the uncertainty in cash flows in GBP associated with a portion of our forecasted IT contract spend in 2022 by fixing the amount at £ 6.0 . Gains and losses from the hedge offset the foreign currency exchange impact of the contracts. We assessed the hedging relationship at the inception of the hedges 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 use the hypothetical derivative method in conjunction with regression analysis using a third-party valuation to measure effectiveness of our cross-currency swap agreements and our forward currency exchange contracts. The following tables present the impact that changes in the fair values of derivatives designated as cash flow hedges had on other comprehensive income (“OCI”), AOCI and earnings for the three and nine months ended September 30, 2021 and 2020: (Loss) Gain Reclassified Gain (Loss) Recognized in OCI from AOCI into Income Three Months Ended September 30, Location of (Loss) Gain Reclassified Three Months Ended September 30, Instrument 2021 2020 from AOCI into Income 2021 2020 Cross-currency swaps $ 4.0 $ ( 3.2 ) Interest and other expenses, net $ ( 3.9 ) $ ( 3.3 ) Foreign currency forward contracts ( 0.2 ) — Selling and administrative expenses — — (Loss) Gain Reclassified Gain (Loss) Recognized in OCI from AOCI into Income Nine Months Ended September 30, Location of (Loss) Gain Reclassified Nine Months Ended September 30, Instrument 2021 2020 from AOCI into Income 2021 2020 Cross-currency swaps $ 0.9 $ 1.6 Interest and other expenses, net $ ( 0.7 ) $ 1.4 Foreign currency forward contracts ( 0.2 ) — Selling and administrative expenses — — We expect the net amount of pre-tax derivative gains included in AOCI at September 30, 2021 to be reclassified into earnings within the next 12 months will not be significant. The actual amount that will be reclassified to earnings over the next 12 months 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 three and nine months ended September 30, 2021 was as follows: Location of (Loss) Gain Amount of (Loss) Gain Recognized in Income Instrument Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Foreign currency forward contracts Interest and other expenses, net $ ( 3.0 ) $ — $ ( 8.5 ) $ 0.3 The following tables present the fair value of derivative and non-derivative assets and liabilities on the Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020: Assets September 30, December 31, Balance Sheet Location 2021 2020 Instruments designated as cash flow hedges: Cross-currency swaps Prepaid expenses and other assets $ 12.5 $ 12.1 Instruments not designated as hedges: Foreign currency forward contracts Accounts receivable, net 0.1 1.0 Total instruments $ 12.6 $ 13.1 Liabilities September 30, December 31, Balance Sheet Location 2021 2020 Instruments designated as net investment hedges: Euro Notes Long-term debt $ 1,038.4 $ 1,094.5 Cross-currency swaps Accrued liabilities 15.9 30.5 Instruments designated as cash flow hedges: Foreign currency forward contracts Accrued liabilities 0.2 — Instruments not designated as hedges: Foreign currency forward contracts Accrued liabilities 2.1 — Total instruments $ 1,056.6 $ 1,125.0 Fair Value Measurements The carrying value of the long-term debt approximates fair value, except for the Euro-denominated notes, because the interest rates are variable and reflect current market rates. The fair value of the Euro-denominated notes, as observable at commonly quoted intervals (Level 2 inputs), was $ 1,090.0 and $ 1,159.1 as of September 30, 2021 and December 31, 2020 , respectively, compared to a carrying value of $ 1,038.4 and $ 1,094.5 , respectively. Our deferred compensation plan assets were $ 130.9 and $ 119.4 as of September 30, 2021 and December 31, 2020, respectively. We determine the fair value of these assets, comprised of publicly traded securities, by using market quotes as of the last day of the period (Level 1 inputs). We measure the fair value of the foreign currency forward contracts and cross-currency swaps at the value based on either directly or indirectly observable inputs from third parties (Level 2 inputs).

Leases

Leases	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	(14) Leases The components of lease expense were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Operating lease expense $ 35.1 $ 37.4 $ 105.5 $ 109.0 Short-term lease expense 1.4 1.8 4.5 9.0 Other lease expense (1) $ 4.6 $ 3.9 $ 13.6 $ 12.4 Total lease expense $ 41.1 $ 43.1 $ 123.6 $ 130.4 (1) Other lease expense includes variable lease expense and sublease income. Other information related to leases was as follows: Nine Months Ended September 30, Supplemental Cash Flow Information 2021 2020 Cash paid for amounts included in the measurement of operating lease liabilities $ 104.7 $ 107.9 Operating ROU assets obtained in exchange for lease obligations 35.9 56.1 September 30, December 31, Supplemental Balance Sheet Information 2021 2020 Operating Leases Operating lease ROU assets $ 360.4 $ 400.7 Operating lease liabilities - current (1) $ 108.0 $ 119.3 Operating lease liabilities - long-term 268.5 305.1 Total operating lease liabilities $ 376.5 $ 424.4 (1) Operating lease liabilities - current are included in accrued expenses on our Consolidated Balance Sheets. September 30, 2021 2020 Weighted Average Remaining Lease Term Operating leases 5.0 years 5.4 years Weighted Average Discount Rate Operating leases 2.8 % 2.9 % Maturities of operating lease liabilities as of September 30, 2021 were as follows: (In millions) Period Ending September 30, 2021 Operating Leases Remainder of 2021 $ 32.5 2022 109.2 2023 84.6 2024 58.7 2025 37.8 2026 28.6 Thereafter 56.5 Total future undiscounted lease payments $ 407.9 Less imputed interest $ ( 31.4 ) Total operating lease liabilities $ 376.5

Segment Data

Segment Data	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Data	(15) Segment Data We are organized and managed primarily on a geographic basis. 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. 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; and APME. The segments derive a significant majority of their revenues from our staffing and interim services. The remaining revenues within these segments are derived from our outcome-based solutions and consulting services, permanent recruitment services, and other 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. Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Revenues from services: Americas: United States (a) $ 644.9 $ 578.8 $ 1,882.5 $ 1,705.6 Other Americas 352.7 350.3 1,162.3 1,071.1 997.6 929.1 3,044.8 2,776.7 Southern Europe: France 1,317.0 1,205.3 3,852.7 3,035.1 Italy 456.4 351.2 1,328.3 947.4 Other Southern Europe 609.2 555.9 1,784.3 1,545.4 2,382.6 2,112.4 6,965.3 5,527.9 Northern Europe 1,166.6 947.7 3,490.9 2,881.9 APME 611.2 595.6 1,858.5 1,759.6 5,158.0 4,584.8 15,359.5 12,946.1 Intercompany Eliminations ( 17.4 ) — ( 17.4 ) — Consolidated (b) $ 5,140.6 $ 4,584.8 $ 15,342.1 $ 12,946.1 Operating unit profit (loss): (c) Americas: United States $ 28.2 $ 19.3 $ 95.4 $ 30.8 Other Americas 12.6 12.2 45.5 37.0 40.8 31.5 140.9 67.8 Southern Europe: France 61.6 51.5 169.9 87.0 Italy 30.8 15.4 81.9 40.6 Other Southern Europe 18.3 4.7 47.6 9.1 110.7 71.6 299.4 136.7 Northern Europe 16.5 ( 22.5 ) 39.2 ( 36.3 ) APME 22.6 16.7 63.7 51.6 190.6 97.3 543.2 219.8 Corporate expenses ( 36.0 ) ( 29.1 ) ( 110.5 ) ( 83.5 ) Goodwill impairment charge — — — ( 66.8 ) Intangible asset amortization expense ( 4.1 ) ( 6.6 ) ( 13.9 ) ( 20.2 ) Operating profit 150.5 61.6 418.8 49.3 Interest and other expenses, net ( 4.9 ) ( 6.0 ) ( 13.1 ) ( 32.3 ) Earnings before income taxes $ 145.6 $ 55.6 $ 405.7 $ 17.0 (a) In the United States, revenues from services included fees received from the related franchise offices of $ 3.3 and $ 3.4 for the three months ended September 30, 2021 and 2020, respectively, and $ 9.4 and $ 8.8 for the nine months ended September 30, 2021 and 2020, respectively. These fees are primarily based on revenues generated by the franchise offices, which were $ 121.3 and $ 116.9 for the three months ended September 30, 2021 and 2020, respectively, and $ 353.4 and $ 315.7 for the nine months ended September 30, 2021 and 2020, respectively. (b) Our consolidated revenues from services include fees received from our franchise offices of $ 3.9 and $ 3.8 for the three months ended September 30, 2021 and 2020, respectively, and $ 11.0 and $ 9.9 for the nine months ended September 30, 2021 and 2020, respectively. These fees are primarily based on revenues generated by the franchise offices, which were $ 253.3 and $ 236.9 for the three months ended September 30, 2021 and 2020, respectively, and $ 755.9 and $ 447.3 for the nine months ended September 30, 2021 and 2020, respectively. (c) We evaluate segment performance based on operating unit profit (“OUP”), which is equal to segment revenues less cost of services and branch and national headquarters operating costs. This profit measure does not include goodwill and intangible asset impairment charges or amortization of intangibles related to acquisitions, corporate expenses, interest and other income and expense amounts or income taxes.

Basis of Presentation and Acc_2

Basis of Presentation and Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Certain information and footnote disclosures normally included in the financial statements prepared in accordance with United States Generally Accepted Accounting Principles ("GAAP") have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, although we believe that the disclosures are adequate to make the information presented not misleading. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements included in our 2020 Annual Report on Form 10-K. The information furnished reflects all adjustments that, in the opinion of management, were necessary for a fair statement of the Consolidated Financial Statements for the periods presented. Such adjustments were of a normal recurring nature, unless otherwise disclosed.
COVID-19	COVID-19 The global spread of COVID-19, which was declared a global pandemic by the World Health Organization in March 2020, has created significant volatility, uncertainty and global macroeconomic disruption. The COVID-19 crisis began to negatively impact our business, operations and consolidated financial statements during the last two weeks of March 2020, with significant lockdown measures implemented by the end of March 2020 in our main markets in Europe and North America, as well as in certain other countries. We continued to experience the negative impacts of the COVID-19 crisis in the third quarter of 2021, particularly related to the impact on supply chains and labor shortages as we believe certain parts of the workforce did not return to the labor market in many industries and markets over concerns about the COVID-19 Delta variant. Although many markets strengthened throughout the first nine months of 2021, the COVID-19 crisis had an adverse effect of curtailing economic activity in certain markets, affecting demand for our services. Continued uncertainty remains as to the future impact of the pandemic on global and local economies. We continue to monitor and assess the impacts that the COVID-19 pandemic may have on our financial condition, liquidity and future results of operations. However, we cannot predict with certainty what the impact will be on future periods. For further information on the impacts of COVID-19 on our business, operations and financial results, see Part I, Item 2: Management’s Discussion and Analysis of Financial Condition and Results of Operations.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts We have an allowance for doubtful accounts recorded as an estimate of the accounts receivable that may not be collected. This allowance is calculated on an entity-by-entity basis with consideration of historical write-off experience, age of receivables, market conditions, 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. A rollforward of our allowance for doubtful accounts is shown below: Nine Months Ended Balance, December 31, 2020 $ 128.1 Provisions charged to earnings 13.7 Write-offs ( 11.7 ) Translation adjustments ( 6.3 ) Reclassifications and other 0.2 Balance, September 30, 2021 $ 124.0
Leases	Leases We determine whether a contract is or contains a lease at contract inception. Right-of-use (“ROU”) assets and long-term lease liabilities are presented as separate line items on our Consolidated Balance Sheets. Current operating lease liabilities are included in accrued expenses on our Consolidated Balance Sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Lease liabilities are recognized at commencement date based on the present value of remaining lease payments over the lease term. As the rate implicit in the lease is not readily determinable in most of our leases, we use our incremental borrowing rate. We determine our incremental borrowing rate at the commencement date using our unsecured borrowing rate, adjusted for collateralization, lease term, economic environment, currency and other factors. ROU assets are recognized at commencement date at the value of the related lease liabilities, adjusted for any prepayments, lease incentives received, and initial direct costs incurred. Our lease terms include options to renew or not terminate the lease when it is reasonably certain that we will exercise that option. Lease expenses for operating leases are recognized on a straight-line basis over the lease term and recorded in selling and administrative expenses on the Consolidated Statements of Operations.
Goodwill Impairment	Goodwill Impairment In accordance with the accounting guidance on goodwill, we perform an annual impairment test of goodwill at our reporting unit 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 evaluate the recoverability of goodwill utilizing an income approach that estimates the fair value of the future discounted cash flows to which the goodwill relates. This approach reflects management’s internal outlook of the reporting units, which is believed to be the best determination of value due to management’s insight and experience with the reporting units. Significant assumptions used in our goodwill impairment tests include: expected future revenue growth rates, operating unit profit margins, working capital levels, discount rates, and a terminal value multiple. We performed our annual impairment test of our goodwill and indefinite-lived intangible assets during the third quarter of 2021 and determined that there was no impairment of our goodwill or indefinite-lived intangible assets. The table below provides our reporting units’ estimated fair values and carrying values, determined as part of our annual goodwill impairment test performed in the third quarter, representing approximately 80% of our consolidated goodwill balance as of September 30, 2021. (in millions) France United States United Kingdom Canada Sweden Netherlands Estimated fair values $ 3,130.8 $ 1,480.2 $ 412.0 $ 203.5 $ 150.1 $ 130.5 Carrying values 1,358.2 912.4 335.4 103.9 85.4 123.7 The fair value of each reporting unit was at least 20 % in excess of the respective reporting unit’s carrying value with the exception of the Netherlands reporting unit, which is part of the Northern Europe segment. The Netherlands reporting unit had a fair value that exceeded its carrying value by approximately 5.5 %. Key assumptions included in the Netherlands discounted cash flow valuation performed during the third quarter of 2021 included a discount rate of 10.4 %, revenue growth for the next three years ranging from 3.0 % - 5.0 %, a terminal value revenue growth rate of 2.0 %, and a terminal value OUP margin of 3.5 %. If the Netherlands reporting cannot meet its operating targets and/or recover from the deteriorated macroeconomic, industry, and market conditions, it may not achieve the growth and margin assumptions noted above and some or all of the recorded goodwill for the Netherlands reporting unit, which was $ 114.2 as of September 30, 2021, could be subject to impairment. While our other reporting units' fair values exceeded 20 % or more of their respective carrying values, given the uncertainty of the financial impacts from the COVID-19 pandemic, there could be significant further decreases in the operating results of our reporting units for a sustained period, which may result in a recognition of goodwill impairment that could be material to the Consolidated Financial Statements. Subsequent Events On October 1, 2021, we acquired ettain group, one of the largest privately held IT resourcing and services providers in North America. Effective that date, ettain group became part of our Experis business in the Americas segment. The aggregate cash consideration paid was $ 930.9 . Of the total consideration paid, $ 925.0 was for the acquired interests and the remaining $ 5.9 was for the excess working capital and cash. The transaction was funded with cash on hand and a $ 150.0 draw on our revolving credit facility on October 1, 2021. We expect to finalize the net working capital adjustments in the fourth quarter of 2021. The acquisition of ettain group will be accounted for as a business combination and the assets and liabilities of ettain group will be included in the Consolidated Balance Sheets as of the acquisition date, and its performance will be included in the Consolidated Statements of Operations subsequent to the acquisition date. The major classes of assets and liabilities of ettain group are expected to be cash and cash equivalents, accounts receivable, current and long-term liabilities, deferred taxes, and goodwill and other amortizable intangible assets.
Recent Accounting Standards	Subsequent Events On October 1, 2021, we acquired ettain group, one of the largest privately held IT resourcing and services providers in North America. Effective that date, ettain group became part of our Experis business in the Americas segment. The aggregate cash consideration paid was $ 930.9 . Of the total consideration paid, $ 925.0 was for the acquired interests and the remaining $ 5.9 was for the excess working capital and cash. The transaction was funded with cash on hand and a $ 150.0 draw on our revolving credit facility on October 1, 2021. We expect to finalize the net working capital adjustments in the fourth quarter of 2021. The acquisition of ettain group will be accounted for as a business combination and the assets and liabilities of ettain group will be included in the Consolidated Balance Sheets as of the acquisition date, and its performance will be included in the Consolidated Statements of Operations subsequent to the acquisition date. The major classes of assets and liabilities of ettain group are expected to be cash and cash equivalents, accounts receivable, current and long-term liabilities, deferred taxes, and goodwill and other amortizable intangible assets.

Basis of Presentation and Acc_3

Basis of Presentation and Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Rollforward of Allowance for Doubtful Accounts	A rollforward of our allowance for doubtful accounts is shown below: Nine Months Ended Balance, December 31, 2020 $ 128.1 Provisions charged to earnings 13.7 Write-offs ( 11.7 ) Translation adjustments ( 6.3 ) Reclassifications and other 0.2 Balance, September 30, 2021 $ 124.0
Schedule of Estimated Fair Values and Carrying Values of Goodwill	The table below provides our reporting units’ estimated fair values and carrying values, determined as part of our annual goodwill impairment test performed in the third quarter, representing approximately 80% of our consolidated goodwill balance as of September 30, 2021. (in millions) France United States United Kingdom Canada Sweden Netherlands Estimated fair values $ 3,130.8 $ 1,480.2 $ 412.0 $ 203.5 $ 150.1 $ 130.5 Carrying values 1,358.2 912.4 335.4 103.9 85.4 123.7

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	In the following table, revenue is disaggregated by service types for each of our reportable segments. See Note 2 to the Consolidated Financial Statements in our 2020 Annual Report on Form 10-K for descriptions of revenue service types. Three Months Ended September 30, 2021 2020 Staffing Outcome- Permanent Other Total Staffing Outcome- Permanent Other Total Americas: United States $ 525.0 $ 46.1 $ 40.4 $ 33.4 $ 644.9 $ 478.2 $ 33.0 $ 21.3 $ 46.3 $ 578.8 Other Americas 328.8 12.6 9.7 1.6 352.7 332.0 10.9 4.0 3.4 350.3 853.8 58.7 50.1 35.0 997.6 810.2 43.9 25.3 49.7 929.1 Southern Europe: France 1,220.0 79.6 12.7 4.7 1,317.0 1,119.8 72.4 9.8 3.3 1,205.3 Italy 432.4 8.7 11.0 4.3 456.4 335.1 7.0 6.0 3.1 351.2 Other Southern Europe 501.8 90.6 14.0 2.8 609.2 456.8 87.0 8.7 3.4 555.9 2,154.2 178.9 37.7 11.8 2,382.6 1,911.7 166.4 24.5 9.8 2,112.4 Northern Europe 1,049.3 62.4 37.0 17.9 1,166.6 845.7 63.2 22.2 16.6 947.7 APME 461.2 103.7 36.0 10.3 611.2 469.3 86.0 30.0 10.3 595.6 4,518.5 403.7 160.8 75.0 5,158.0 4,036.9 359.5 102.0 86.4 4,584.8 Intercompany Eliminations ( 17.4 ) — Total $ 5,140.6 $ 4,584.8 Nine Months Ended September 30, 2021 2020 Staffing Outcome- Permanent Other Total Staffing Outcome- Permanent Other Total Americas: United States $ 1,562.1 $ 108.4 $ 100.8 $ 111.2 $ 1,882.5 $ 1,425.9 $ 93.6 $ 62.1 $ 124.0 $ 1,705.6 Other Americas 1,097.5 33.5 23.7 7.6 1,162.3 1,018.7 30.6 12.6 9.2 1,071.1 2,659.6 141.9 124.5 118.8 3,044.8 2,444.6 124.2 74.7 133.2 2,776.7 Southern Europe: France 3,545.1 249.7 40.5 17.4 3,852.7 2,781.5 213.0 29.7 10.9 3,035.1 Italy 1,257.3 24.6 32.5 13.9 1,328.3 897.2 20.7 19.0 10.5 947.4 Other Southern Europe 1,458.2 277.5 38.9 9.7 1,784.3 1,253.3 252.6 30.1 9.4 1,545.4 6,260.6 551.8 111.9 41.0 6,965.3 4,932.0 486.3 78.8 30.8 5,527.9 Northern Europe 3,135.7 193.8 102.6 58.8 3,490.9 2,563.6 198.5 73.1 46.7 2,881.9 APME 1,407.5 304.2 113.2 33.6 1,858.5 1,386.5 250.9 95.1 27.1 1,759.6 13,463.4 1,191.7 452.2 252.2 15,359.5 11,326.7 1,059.9 321.7 237.8 12,946.1 Intercompany Eliminations ( 17.4 ) — Total $ 15,342.1 $ 12,946.1 In the following table, revenue is disaggregated by timing of revenue recognition for each of our reportable segments: Three Months Ended September 30, 2021 2020 Services Services Total Services Services Total Americas: United States $ 623.2 $ 21.7 $ 644.9 $ 567.6 $ 11.2 $ 578.8 Other Americas 346.6 6.1 352.7 347.6 2.7 350.3 969.8 27.8 997.6 915.2 13.9 929.1 Southern Europe: France 1,305.5 11.5 1,317.0 1,196.4 8.9 1,205.3 Italy 446.3 10.1 456.4 345.6 5.6 351.2 Other Southern Europe 598.0 11.2 609.2 548.6 7.3 555.9 2,349.8 32.8 2,382.6 2,090.6 21.8 2,112.4 Northern Europe 1,135.1 31.5 1,166.6 928.3 19.4 947.7 APME 590.5 20.7 611.2 579.1 16.5 595.6 5,045.2 112.8 5,158.0 4,513.2 71.6 4,584.8 Intercompany Eliminations ( 17.4 ) — Total $ 5,140.6 $ 4,584.8 Nine Months Ended September 30, 2021 2020 Services Services Total Services Services Total Americas: United States $ 1,829.6 $ 52.9 $ 1,882.5 $ 1,673.0 $ 32.6 $ 1,705.6 Other Americas 1,147.2 15.1 1,162.3 1,062.9 8.2 1,071.1 2,976.8 68.0 3,044.8 2,735.9 40.8 2,776.7 Southern Europe: France 3,815.5 37.2 3,852.7 3,008.0 27.1 3,035.1 Italy 1,297.9 30.4 1,328.3 929.7 17.7 947.4 Other Southern Europe 1,752.5 31.8 1,784.3 1,520.1 25.3 1,545.4 6,865.9 99.4 6,965.3 5,457.8 70.1 5,527.9 Northern Europe 3,402.0 88.9 3,490.9 2,818.3 63.6 2,881.9 APME 1,796.7 61.8 1,858.5 1,707.9 51.7 1,759.6 15,041.4 318.1 15,359.5 12,719.9 226.2 12,946.1 Intercompany Eliminations ( 17.4 ) — Total $ 15,342.1 $ 12,946.1

Restructuring Costs (Tables)

Restructuring Costs (Tables)	9 Months Ended
	Sep. 30, 2021
Restructuring and Related Activities [Abstract]
Schedule of Changes in Restructuring Reserve	Changes in the restructuring reserve by reportable segment and Corporate are shown below. Americas (1) Southern (2) Northern APME Corporate Total Balance, January 1, 2021 $ 1.9 $ 3.5 $ 40.7 $ — $ — $ 46.1 Severance costs 5.3 — — — — 5.3 Costs paid or utilized ( 4.2 ) ( 2.3 ) ( 26.0 ) — — ( 32.5 ) Balance, September 30, 2021 $ 3.0 $ 1.2 $ 14.7 $ — $ — $ 18.9 (1) Balances related to the United States were $ 1.4 and $ 0.4 as of December 31, 2020 and September 30, 2021 , respectively. (2) Balances related to France were $ 0.6 as of both December 31, 2020 and September 30, 2021 . Balances related to Italy were $ 1.4 and $ 0.5 as of December 31, 2020 and September 30, 2021 , respectively.

Net Earnings (Loss) Per Share (

Net Earnings (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Calculations of Net Earnings (Loss) Per Share - Basic and Diluted	The calculations of net earnings (loss) per share - basic and net earnings (loss) per share - diluted were as follows: Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Net earnings (loss) available to common shareholders $ 97.7 $ 10.3 $ 271.3 $ ( 52.4 ) Weighted-average common shares outstanding (in millions) Weighted-average common shares outstanding - basic 54.3 58.2 54.7 58.4 Effect of dilutive securities - stock options 0.2 — 0.1 — Effect of other share-based awards 0.7 0.3 0.6 — Weighted-average common shares outstanding - diluted 55.2 58.5 55.4 58.4 Net earnings (loss) per share - basic $ 1.80 $ 0.18 $ 4.96 $ ( 0.90 ) Net earnings (loss) per share - diluted $ 1.77 $ 0.18 $ 4.90 $ ( 0.90 )

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Intangible Assets	We have goodwill, finite-lived intangible assets and indefinite-lived intangible assets as follows: September 30, 2021 December 31, 2020 Gross Accumulated Net Gross Accumulated Net Goodwill (1) $ 1,206.6 $ — $ 1,206.6 $ 1,225.8 $ — $ 1,225.8 Intangible assets: Finite-lived: Customer relationships 465.1 $ 415.5 $ 49.6 $ 473.0 $ 403.8 $ 69.2 Other 22.7 17.8 4.9 21.9 21.6 0.3 487.8 433.3 54.5 494.9 425.4 69.5 Indefinite-lived: Tradenames (2) 52.0 — 52.0 52.0 — 52.0 Reacquired franchise rights 125.7 — 125.7 127.1 — 127.1 177.7 — 177.7 179.1 — 179.1 Total intangible assets $ 665.5 $ 433.3 $ 232.2 $ 674.0 $ 425.4 $ 248.6 (1) Balances were net of accumulated impairment loss of $ 644.2 as of both September 30, 2021 and December 31, 2020. (2) Balances were net of accumulated impairment loss of $ 139.5 as o f both September 30, 2021 and December 31, 2020.
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 (2) Northern APME Corporate (3) Total Balance, December 31, 2020 $ 536.6 $ 154.9 $ 326.6 $ 81.7 $ 126.0 $ 1,225.8 Acquisitions 3.1 — — — — 3.1 Currency impact ( 0.4 ) ( 7.5 ) ( 10.5 ) ( 3.9 ) — ( 22.3 ) Balance, September 30, 2021 $ 539.3 $ 147.4 $ 316.1 $ 77.8 $ 126.0 $ 1,206.6 (1) Balances related to the United States were $ 490.2 an d $ 493.3 a s of December 31, 2020 and September 30, 2021, respectively. (2) Balances related to France were $ 73.3 and $69.5 as of December 31, 2020 and September 30, 2021 , respectively. Balances related to Italy were $ 4.2 and $ 4.0 as of December 31, 2020 and September 30, 2021, respectively. (3) The majority of the Corporate balance relates to goodwill attributable to our acquisitions of Right Management ($ 62.1 ) and Jefferson Wells ($ 55.5 ). Jefferson Wells is part of the United States reporting unit. Right Management is allocated to the reporting units of the countries in which Right Management operates. For purposes of monitoring our total assets by segment, we do not allocate the Corporate balances to the respective reportable segments as this is commensurate with how we operate our business. We do, however, include these balances within the appropriate reporting units for our goodwill impairment testing. See table below for the breakout of goodwill balances by reporting unit.
Schedule of Goodwill Balances by Reporting Unit	Goodwill balances by reporting unit were as follows: September 30, December 31, 2021 2020 United States $ 572.1 $ 545.7 Netherlands 114.2 119.3 United Kingdom 110.3 100.2 France 75.6 73.3 Sweden 42.1 43.6 Other reporting units (1) 292.3 343.7 Total goodwill $ 1,206.6 $ 1,225.8 (1) As of July 1, 2021, balances pertaining to Right Management entities were allocated to corresponding reporting units.

Retirement Plans (Tables)

Retirement Plans (Tables)	9 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost (Credit)	The components of the net periodic benefit cost (credit) for our plans were as follows: Defined Benefit Pension Plan 3 Months Ended 9 Months Ended September 30, September 30, 2021 2020 2021 2020 Service cost $ 5.5 $ 5.3 $ 16.6 $ 15.5 Interest cost 1.5 2.4 4.6 7.0 Expected return on assets ( 3.1 ) ( 3.4 ) ( 9.2 ) ( 10.0 ) Settlement loss — — — 10.2 Other 1.4 0.9 4.1 2.5 Total benefit cost $ 5.3 $ 5.2 $ 16.1 $ 25.2 Retiree Health Care Plan 3 Months Ended 9 Months Ended September 30, September 30, 2021 2020 2021 2020 Interest cost $ 0.1 $ 0.1 $ 0.2 $ 0.3 Prior service credit ( 0.2 ) ( 0.1 ) ( 0.6 ) ( 0.5 ) Other — — 0.1 — Total benefit credit $ ( 0.1 ) $ — $ ( 0.3 ) $ ( 0.2 )

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss, Net of Tax	The components of accumulated other comprehensive loss, net of tax, were as follows: September 30, December 31, 2021 2020 Foreign currency translation $ ( 172.0 ) $ ( 72.1 ) Translation loss on derivative instruments, net of income tax benefit of $( 18.8 ) and $( 34.9 ), respectively ( 37.1 ) ( 81.2 ) Translation loss on long-term intercompany loans ( 127.6 ) ( 133.3 ) Defined benefit pension plans, net of income tax benefit of $( 34.0 ) and $( 38.2 ), respectively ( 108.2 ) ( 111.4 ) Retiree health care plan, net of income taxes of $ 1.7 and $ 1.8 , respectively 0.3 0.7 Accumulated other comprehensive loss $ ( 444.6 ) $ ( 397.3 )

Interest and Other Expenses, _2

Interest and Other Expenses, Net (Tables)	9 Months Ended
	Sep. 30, 2021
Other Nonoperating Income (Expense) [Abstract]
Schedule of Interest and Other Expenses Net	Interest and other expenses, net consisted of the following: Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Interest expense $ 9.6 $ 10.8 $ 29.5 $ 32.3 Interest income ( 2.9 ) ( 3.1 ) ( 9.1 ) ( 9.9 ) Foreign exchange loss 1.4 0.6 4.5 4.2 Miscellaneous (income) expense, net (1) ( 3.2 ) ( 2.3 ) ( 11.8 ) 5.7 Interest and other expenses, net $ 4.9 $ 6.0 $ 13.1 $ 32.3 (1) Miscellaneous expense, net for the nine months ended September 30, 2020 includes a $ 10.2 pension settlement loss related to one of our United States plans. See Note 10 to the Consolidated Financial Statements for further information.

Derivative Financial Instrume_2

Derivative Financial Instruments and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
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 three and nine months ended September 30, 2021 and 2020 was as follows: Gain (Loss) Recognized in Other Comprehensive Income Three Months Ended September 30, Nine Months Ended September 30, Instrument 2021 2020 2021 2020 Euro Notes $ 24.6 $ ( 43.8 ) $ 57.0 $ ( 45.7 ) Cross-currency swaps 1.6 ( 11.3 ) 14.9 ( 8.9 )
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 other comprehensive income (“OCI”), AOCI and earnings for the three and nine months ended September 30, 2021 and 2020: (Loss) Gain Reclassified Gain (Loss) Recognized in OCI from AOCI into Income Three Months Ended September 30, Location of (Loss) Gain Reclassified Three Months Ended September 30, Instrument 2021 2020 from AOCI into Income 2021 2020 Cross-currency swaps $ 4.0 $ ( 3.2 ) Interest and other expenses, net $ ( 3.9 ) $ ( 3.3 ) Foreign currency forward contracts ( 0.2 ) — Selling and administrative expenses — — (Loss) Gain Reclassified Gain (Loss) Recognized in OCI from AOCI into Income Nine Months Ended September 30, Location of (Loss) Gain Reclassified Nine Months Ended September 30, Instrument 2021 2020 from AOCI into Income 2021 2020 Cross-currency swaps $ 0.9 $ 1.6 Interest and other expenses, net $ ( 0.7 ) $ 1.4 Foreign currency forward contracts ( 0.2 ) — Selling and administrative expenses — —
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 three and nine months ended September 30, 2021 was as follows: Location of (Loss) Gain Amount of (Loss) Gain Recognized in Income Instrument Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Foreign currency forward contracts Interest and other expenses, net $ ( 3.0 ) $ — $ ( 8.5 ) $ 0.3
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 September 30, 2021 and December 31, 2020: Assets September 30, December 31, Balance Sheet Location 2021 2020 Instruments designated as cash flow hedges: Cross-currency swaps Prepaid expenses and other assets $ 12.5 $ 12.1 Instruments not designated as hedges: Foreign currency forward contracts Accounts receivable, net 0.1 1.0 Total instruments $ 12.6 $ 13.1 Liabilities September 30, December 31, Balance Sheet Location 2021 2020 Instruments designated as net investment hedges: Euro Notes Long-term debt $ 1,038.4 $ 1,094.5 Cross-currency swaps Accrued liabilities 15.9 30.5 Instruments designated as cash flow hedges: Foreign currency forward contracts Accrued liabilities 0.2 — Instruments not designated as hedges: Foreign currency forward contracts Accrued liabilities 2.1 — Total instruments $ 1,056.6 $ 1,125.0

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Components of Lease Expense and Other Information	The components of lease expense were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Operating lease expense $ 35.1 $ 37.4 $ 105.5 $ 109.0 Short-term lease expense 1.4 1.8 4.5 9.0 Other lease expense (1) $ 4.6 $ 3.9 $ 13.6 $ 12.4 Total lease expense $ 41.1 $ 43.1 $ 123.6 $ 130.4 (1) Other lease expense includes variable lease expense and sublease income. Other information related to leases was as follows: Nine Months Ended September 30, Supplemental Cash Flow Information 2021 2020 Cash paid for amounts included in the measurement of operating lease liabilities $ 104.7 $ 107.9 Operating ROU assets obtained in exchange for lease obligations 35.9 56.1 September 30, 2021 2020 Weighted Average Remaining Lease Term Operating leases 5.0 years 5.4 years Weighted Average Discount Rate Operating leases 2.8 % 2.9 %
Supplemental Balance Sheet Information	September 30, December 31, Supplemental Balance Sheet Information 2021 2020 Operating Leases Operating lease ROU assets $ 360.4 $ 400.7 Operating lease liabilities - current (1) $ 108.0 $ 119.3 Operating lease liabilities - long-term 268.5 305.1 Total operating lease liabilities $ 376.5 $ 424.4 (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 September 30, 2021 were as follows: (In millions) Period Ending September 30, 2021 Operating Leases Remainder of 2021 $ 32.5 2022 109.2 2023 84.6 2024 58.7 2025 37.8 2026 28.6 Thereafter 56.5 Total future undiscounted lease payments $ 407.9 Less imputed interest $ ( 31.4 ) Total operating lease liabilities $ 376.5

Segment Data (Tables)

Segment Data (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule of Segment Data	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Revenues from services: Americas: United States (a) $ 644.9 $ 578.8 $ 1,882.5 $ 1,705.6 Other Americas 352.7 350.3 1,162.3 1,071.1 997.6 929.1 3,044.8 2,776.7 Southern Europe: France 1,317.0 1,205.3 3,852.7 3,035.1 Italy 456.4 351.2 1,328.3 947.4 Other Southern Europe 609.2 555.9 1,784.3 1,545.4 2,382.6 2,112.4 6,965.3 5,527.9 Northern Europe 1,166.6 947.7 3,490.9 2,881.9 APME 611.2 595.6 1,858.5 1,759.6 5,158.0 4,584.8 15,359.5 12,946.1 Intercompany Eliminations ( 17.4 ) — ( 17.4 ) — Consolidated (b) $ 5,140.6 $ 4,584.8 $ 15,342.1 $ 12,946.1 Operating unit profit (loss): (c) Americas: United States $ 28.2 $ 19.3 $ 95.4 $ 30.8 Other Americas 12.6 12.2 45.5 37.0 40.8 31.5 140.9 67.8 Southern Europe: France 61.6 51.5 169.9 87.0 Italy 30.8 15.4 81.9 40.6 Other Southern Europe 18.3 4.7 47.6 9.1 110.7 71.6 299.4 136.7 Northern Europe 16.5 ( 22.5 ) 39.2 ( 36.3 ) APME 22.6 16.7 63.7 51.6 190.6 97.3 543.2 219.8 Corporate expenses ( 36.0 ) ( 29.1 ) ( 110.5 ) ( 83.5 ) Goodwill impairment charge — — — ( 66.8 ) Intangible asset amortization expense ( 4.1 ) ( 6.6 ) ( 13.9 ) ( 20.2 ) Operating profit 150.5 61.6 418.8 49.3 Interest and other expenses, net ( 4.9 ) ( 6.0 ) ( 13.1 ) ( 32.3 ) Earnings before income taxes $ 145.6 $ 55.6 $ 405.7 $ 17.0 (a) In the United States, revenues from services included fees received from the related franchise offices of $ 3.3 and $ 3.4 for the three months ended September 30, 2021 and 2020, respectively, and $ 9.4 and $ 8.8 for the nine months ended September 30, 2021 and 2020, respectively. These fees are primarily based on revenues generated by the franchise offices, which were $ 121.3 and $ 116.9 for the three months ended September 30, 2021 and 2020, respectively, and $ 353.4 and $ 315.7 for the nine months ended September 30, 2021 and 2020, respectively. (b) Our consolidated revenues from services include fees received from our franchise offices of $ 3.9 and $ 3.8 for the three months ended September 30, 2021 and 2020, respectively, and $ 11.0 and $ 9.9 for the nine months ended September 30, 2021 and 2020, respectively. These fees are primarily based on revenues generated by the franchise offices, which were $ 253.3 and $ 236.9 for the three months ended September 30, 2021 and 2020, respectively, and $ 755.9 and $ 447.3 for the nine months ended September 30, 2021 and 2020, respectively. (c) We evaluate segment performance based on operating unit profit (“OUP”), which is equal to segment revenues less cost of services and branch and national headquarters operating costs. This profit measure does not include goodwill and intangible asset impairment charges or amortization of intangibles related to acquisitions, corporate expenses, interest and other income and expense amounts or income taxes.

Basis of Presentation and Acc_4

Basis of Presentation and Accounting Policies - Summary of Rollforward of Allowance for Doubtful Accounts (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Accounting Policies [Abstract]
Balance, December 31, 2020	$ 128.1
Provisions charged to earnings	13.7
Write-offs	(11.7)
Translation adjustments	(6.3)
Reclassifications and other	(0.2)
Balance, September 30, 2021	$ 124

Basis of Presentation and Acc_5

Basis of Presentation and Accounting Policies - Schedule of Estimated Fair Values and Carrying Values of Goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Goodwill [Line Items]
Carrying values	$ 1,206.6	$ 1,225.8
Reportable Geographical Components | France
Goodwill [Line Items]
Estimated fair values	3,130.8
Carrying values	1,358.2
Reportable Geographical Components | United States
Goodwill [Line Items]
Estimated fair values	1,480.2
Carrying values	912.4
Reportable Geographical Components | United Kingdom
Goodwill [Line Items]
Estimated fair values	412
Carrying values	335.4
Reportable Geographical Components | Switzerland
Goodwill [Line Items]
Estimated fair values	203.5
Carrying values	103.9
Reportable Geographical Components | Canada
Goodwill [Line Items]
Estimated fair values	150.1
Carrying values	85.4
Reportable Geographical Components | Sweden
Goodwill [Line Items]
Estimated fair values	130.5
Carrying values	$ 123.7

Basis of Presentation and Acc_6

Basis of Presentation and Accounting Policies - Additional Information (Details) $ in Millions	Oct. 01, 2021USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Accounting Policies [Line Items]
Non-cash impairment charge loss		$ 0	$ 0	$ 0	$ 66.8
Goodwill		$ 1,206.6		$ 1,206.6		$ 1,225.8
NETHERLANDS
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit				5.50%
Ettain Group [Member] | Subsequent Event [Member]
Accounting Policies [Line Items]
Aggregate cash consideration paid	$ 930.9
Draw on revolving credit facility	150
Ettain Group [Member] | working capital and cash [Member] | Subsequent Event [Member]
Accounting Policies [Line Items]
Aggregate cash consideration paid	5.9
Ettain Group [Member] | Acquired interests [Member] | Subsequent Event [Member]
Accounting Policies [Line Items]
Aggregate cash consideration paid	$ 925
Netherlands | Discount Rates
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit				10.40%
Netherlands | Terminal Value Revenue Growth Rate
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)		2		2
Netherlands | Terminal Value OUP Margin
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)		3.5		3.5
Northern Europe | United Kingdom
Accounting Policies [Line Items]
Goodwill		$ 110.3		$ 110.3		100.2
Northern Europe | Netherlands
Accounting Policies [Line Items]
Goodwill		$ 114.2		$ 114.2		$ 119.3
Minimum
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit				20.00%
Minimum | Other Reporting Units
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit				20.00%
Minimum | Netherlands | Terminal Value Revenue Growth Rate
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)		3		3
Maximum [Member] | Netherlands | Terminal Value Revenue Growth Rate
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)		5		5

Recent Accounting Standards - A

Recent Accounting Standards - Additional Information (Details)	Sep. 30, 2021
ASU - Income Taxes
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2021
Change in accounting principle, accounting standards update, immaterial effect	true
ASU - Equity Method Investments
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2021
Change in accounting principle, accounting standards update, immaterial effect	true

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Deferred revenue	$ 30.5	$ 34.9

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 5,140.6	$ 4,584.8	$ 15,342.1	$ 12,946.1
Intercompany Eliminations
Disaggregation of Revenue [Line Items]
Revenue	(17.4)	0	(17.4)	0
Americas
Disaggregation of Revenue [Line Items]
Revenue	997.6	929.1	3,044.8	2,776.7
Americas | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	969.8	915.2	2,976.8	2,735.9
Americas | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	27.8	13.9	68	40.8
Americas | United States
Disaggregation of Revenue [Line Items]
Revenue	644.9	578.8	1,882.5	1,705.6
Americas | United States | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	623.2	567.6	1,829.6	1,673
Americas | United States | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	21.7	11.2	52.9	32.6
Americas | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	352.7	350.3	1,162.3	1,071.1
Americas | Other Americas | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	346.6	347.6	1,147.2	1,062.9
Americas | Other Americas | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	6.1	2.7	15.1	8.2
Americas | Staffing and Interim
Disaggregation of Revenue [Line Items]
Revenue	853.8	810.2	2,659.6	2,444.6
Americas | Staffing and Interim | United States
Disaggregation of Revenue [Line Items]
Revenue	525	478.2	1,562.1	1,425.9
Americas | Staffing and Interim | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	328.8	332	1,097.5	1,018.7
Americas | Outcome-Based Solutions and Consulting
Disaggregation of Revenue [Line Items]
Revenue	58.7	43.9	141.9	124.2
Americas | Outcome-Based Solutions and Consulting | United States
Disaggregation of Revenue [Line Items]
Revenue	46.1	33	108.4	93.6
Americas | Outcome-Based Solutions and Consulting | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	12.6	10.9	33.5	30.6
Americas | Permanent Recruitment
Disaggregation of Revenue [Line Items]
Revenue	50.1	25.3	124.5	74.7
Americas | Permanent Recruitment | United States
Disaggregation of Revenue [Line Items]
Revenue	40.4	21.3	100.8	62.1
Americas | Permanent Recruitment | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	9.7	4	23.7	12.6
Americas | Other
Disaggregation of Revenue [Line Items]
Revenue	35	49.7	118.8	133.2
Americas | Other | United States
Disaggregation of Revenue [Line Items]
Revenue	33.4	46.3	111.2	124
Americas | Other | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	1.6	3.4	7.6	9.2
Southern Europe
Disaggregation of Revenue [Line Items]
Revenue	2,382.6	2,112.4	6,965.3	5,527.9
Southern Europe | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	2,349.8	2,090.6	6,865.9	5,457.8
Southern Europe | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	32.8	21.8	99.4	70.1
Southern Europe | France
Disaggregation of Revenue [Line Items]
Revenue	1,317	1,205.3	3,852.7	3,035.1
Southern Europe | France | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	1,305.5	1,196.4	3,815.5	3,008
Southern Europe | France | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	11.5	8.9	37.2	27.1
Southern Europe | Italy
Disaggregation of Revenue [Line Items]
Revenue	456.4	351.2	1,328.3	947.4
Southern Europe | Italy | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	446.3	345.6	1,297.9	929.7
Southern Europe | Italy | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	10.1	5.6	30.4	17.7
Southern Europe | Other Southern Europe
Disaggregation of Revenue [Line Items]
Revenue	609.2	555.9	1,784.3	1,545.4
Southern Europe | Other Southern Europe | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	598	548.6	1,752.5	1,520.1
Southern Europe | Other Southern Europe | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	11.2	7.3	31.8	25.3
Southern Europe | Staffing and Interim
Disaggregation of Revenue [Line Items]
Revenue	2,154.2	1,911.7	6,260.6	4,932
Southern Europe | Staffing and Interim | France
Disaggregation of Revenue [Line Items]
Revenue	1,220	1,119.8	3,545.1	2,781.5
Southern Europe | Staffing and Interim | Italy
Disaggregation of Revenue [Line Items]
Revenue	432.4	335.1	1,257.3	897.2
Southern Europe | Staffing and Interim | Other Southern Europe
Disaggregation of Revenue [Line Items]
Revenue	501.8	456.8	1,458.2	1,253.3
Southern Europe | Outcome-Based Solutions and Consulting
Disaggregation of Revenue [Line Items]
Revenue	178.9	166.4	551.8	486.3
Southern Europe | Outcome-Based Solutions and Consulting | France
Disaggregation of Revenue [Line Items]
Revenue	79.6	72.4	249.7	213
Southern Europe | Outcome-Based Solutions and Consulting | Italy
Disaggregation of Revenue [Line Items]
Revenue	8.7	7	24.6	20.7
Southern Europe | Outcome-Based Solutions and Consulting | Other Southern Europe
Disaggregation of Revenue [Line Items]
Revenue	90.6	87	277.5	252.6
Southern Europe | Permanent Recruitment
Disaggregation of Revenue [Line Items]
Revenue	37.7	24.5	111.9	78.8
Southern Europe | Permanent Recruitment | France
Disaggregation of Revenue [Line Items]
Revenue	12.7	9.8	40.5	29.7
Southern Europe | Permanent Recruitment | Italy
Disaggregation of Revenue [Line Items]
Revenue	11	6	32.5	19
Southern Europe | Permanent Recruitment | Other Southern Europe
Disaggregation of Revenue [Line Items]
Revenue	14	8.7	38.9	30.1
Southern Europe | Other
Disaggregation of Revenue [Line Items]
Revenue	11.8	9.8	41	30.8
Southern Europe | Other | France
Disaggregation of Revenue [Line Items]
Revenue	4.7	3.3	17.4	10.9
Southern Europe | Other | Italy
Disaggregation of Revenue [Line Items]
Revenue	4.3	3.1	13.9	10.5
Southern Europe | Other | Other Southern Europe
Disaggregation of Revenue [Line Items]
Revenue	2.8	3.4	9.7	9.4
Northern Europe
Disaggregation of Revenue [Line Items]
Revenue	1,166.6	947.7	3,490.9	2,881.9
Northern Europe | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	1,135.1	928.3	3,402	2,818.3
Northern Europe | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	31.5	19.4	88.9	63.6
Northern Europe | Staffing and Interim
Disaggregation of Revenue [Line Items]
Revenue	1,049.3	845.7	3,135.7	2,563.6
Northern Europe | Outcome-Based Solutions and Consulting
Disaggregation of Revenue [Line Items]
Revenue	62.4	63.2	193.8	198.5
Northern Europe | Permanent Recruitment
Disaggregation of Revenue [Line Items]
Revenue	37	22.2	102.6	73.1
Northern Europe | Other
Disaggregation of Revenue [Line Items]
Revenue	17.9	16.6	58.8	46.7
APME
Disaggregation of Revenue [Line Items]
Revenue	611.2	595.6	1,858.5	1,759.6
APME | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	590.5	579.1	1,796.7	1,707.9
APME | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	20.7	16.5	61.8	51.7
APME | Staffing and Interim
Disaggregation of Revenue [Line Items]
Revenue	461.2	469.3	1,407.5	1,386.5
APME | Outcome-Based Solutions and Consulting
Disaggregation of Revenue [Line Items]
Revenue	103.7	86	304.2	250.9
APME | Permanent Recruitment
Disaggregation of Revenue [Line Items]
Revenue	36	30	113.2	95.1
APME | Other
Disaggregation of Revenue [Line Items]
Revenue	10.3	10.3	33.6	27.1
Northern Europe and APME
Disaggregation of Revenue [Line Items]
Revenue	5,158	4,584.8	15,359.5	12,946.1
Northern Europe and APME | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	5,045.2	4,513.2	15,041.4	12,719.9
Northern Europe and APME | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	112.8	71.6	318.1	226.2
Northern Europe and APME | Staffing and Interim
Disaggregation of Revenue [Line Items]
Revenue	4,518.5	4,036.9	13,463.4	11,326.7
Northern Europe and APME | Outcome-Based Solutions and Consulting
Disaggregation of Revenue [Line Items]
Revenue	403.7	359.5	1,191.7	1,059.9
Northern Europe and APME | Permanent Recruitment
Disaggregation of Revenue [Line Items]
Revenue	160.8	102	452.2	321.7
Northern Europe and APME | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 75	$ 86.4	$ 252.2	$ 237.8

Share-Based Compensation Plans

Share-Based Compensation Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Share-based compensation	$ 9.8	$ 6.9	$ 26.7	$ 18.4
Consideration received from share-based awards			$ 5.3	$ 7.4

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)Business
Business Combinations [Abstract]
Cash consideration for acquisitions			$ 1.7
Number Of Businesses Disposed | Business			4
Proceeds from Divestiture of Businesses		$ 5.8
Gain (Loss) on Disposition of Business	$ (5.8)		$ (5.8)
Total Cash Consideration For Acquisitions Net Of Cash Acquired		$ 13.3

Restructuring Costs - Additiona

Restructuring Costs - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Restructuring and Related Activities [Abstract]
Restructuring costs	$ 5.3	$ 98.1
Payments for restructuring reserve	32.5
Reserve will be paid by end of period	$ 18.9		$ 46.1

Restructuring Costs - Schedule

Restructuring Costs - Schedule of Changes in Restructuring Reserve (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	$ 46.1
Severance costs	5.3
Costs paid or utilized	(32.5)
Balance, end of period	18.9
Reportable segments | Americas
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	1.9	[1]
Severance costs	5.3	[1]
Costs paid or utilized	(4.2)	[1]
Balance, end of period	3	[1]
Reportable segments | Southern Europe
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	3.5	[2]
Severance costs	0	[2]
Costs paid or utilized	(2.3)	[2]
Balance, end of period	1.2	[2]
Reportable segments | Northern Europe
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	40.7
Severance costs	0
Costs paid or utilized	(26)
Balance, end of period	14.7
Reportable segments | APME
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0
Severance costs	0
Costs paid or utilized	0
Balance, end of period	0
Corporate
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0
Severance costs	0
Costs paid or utilized	0
Balance, end of period	$ 0
[1]	Balances related to the United States were $ 1.4 and $ 0.4 as of December 31, 2020 and September 30, 2021 , respectively.
[2]	Balances related to France were $ 0.6 as of both December 31, 2020 and September 30, 2021 . Balances related to Italy were $ 1.4 and $ 0.5 as of December 31, 2020 and September 30, 2021 , respectively.

Restructuring Costs - Schedul_2

Restructuring Costs - Schedule of Changes in Restructuring Reserve (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 18.9	$ 46.1
Americas | United States
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	0.4	1.4
Southern Europe | France
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	0.6	0.6
Southern Europe | Italy
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 0.5	$ 1.4

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax [Line Items]
Effective income tax rate (as percent)	32.90%	81.50%	33.10%	407.40%
U.S. Federal statutory rate (as percent)	21.00%		21.00%
Gross unrecognized tax benefits	$ 68		$ 68		$ 64.5
Earliest Tax Year
Income Tax [Line Items]
Income tax examination year under examination			2014
Latest Tax Year
Income Tax [Line Items]
Income tax examination year under examination			2021
French
Income Tax [Line Items]
Corporate tax rate	27.50%		27.50%
Reduction in business tax rate	50.00%		50.00%

Net Earnings (Loss) Per Share -

Net Earnings (Loss) Per Share - Calculations of Net Earnings Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net earnings (loss) available to common shareholders	$ 97.7	$ 111.6	$ 62	$ 10.3	$ (64.4)	$ 1.7	$ 271.3	$ (52.4)
Weighted-average common shares outstanding (in millions)
Weighted-average common shares outstanding - basic	54.3			58.2			54.7	58.4
Weighted-average common shares outstanding - diluted	55.2			58.5			55.4	58.4
Net earnings (loss) per share - basic	$ 1.80			$ 0.18			$ 4.96	$ (0.90)
Net earnings (loss) per share - diluted	$ 1.77			$ 0.18			$ 4.90	$ (0.90)
Effect of dilutive securities - stock options
Weighted-average common shares outstanding (in millions)
Effect of dilutive securities	0.2			0			0.1	0
Effect of other share-based awards
Weighted-average common shares outstanding (in millions)
Effect of dilutive securities	0.7			0.3			0.6	0

Net Earnings (Loss) Per Share_2

Net Earnings (Loss) Per Share - Additional Information (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
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 (loss) per share - diluted (in shares)	0.1	0.7	0.2	1.5

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 1,206.6	$ 1,225.8
Finite-lived:
Gross	487.8	494.9
Accumulated Amortization	433.3	425.4
Net	54.5	69.5
Indefinite-lived:
Gross	177.7	179.1
Total intangible assets
Gross	665.5	674
Accumulated Amortization	433.3	425.4
Net	232.2	248.6
Tradenames
Indefinite-lived:
Gross	52	52
Reacquired franchise rights
Indefinite-lived:
Gross	125.7	127.1
Customer relationships
Finite-lived:
Gross	465.1	473
Accumulated Amortization	415.5	403.8
Net	49.6	69.2
Other
Finite-lived:
Gross	22.7	21.9
Accumulated Amortization	17.8	21.6
Net	$ 4.9	$ 0.3

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Total intangible assets
Goodwill, accumulated impairment loss	$ 644.2	$ 644.2
Tradenames
Total intangible assets
Indefinite-lived, accumulated impairment loss	$ 139.5	$ 139.5

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Additional Information (Details) $ in Millions	Sep. 30, 2021USD ($)
Intangible Assets, Future Amortization Expense by Fiscal Year [Abstract]
Estimated amortization expense, remainder of 2021	$ 3.4
Estimated amortization expense, 2022	13.1
Estimated amortization expense, 2023	10.5
Estimated amortization expense, 2024	8.1
Estimated amortization expense, 2025	6
Estimated amortization expense, 2026	$ 2.2

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Changes in Carrying Value of Goodwill by Reportable Segment (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Goodwill [Roll Forward]
Balance, December 31, 2020	$ 1,225.8
Acquisitions	3.1
Currency impact	22.3
Balance, September 30, 2021	1,206.6
Reportable segments | Americas
Goodwill [Roll Forward]
Balance, December 31, 2020	536.6
Acquisitions	3.1
Currency impact	0.4
Balance, September 30, 2021	539.3
Reportable segments | Southern Europe
Goodwill [Roll Forward]
Balance, December 31, 2020	154.9
Acquisitions	0
Currency impact	7.5
Balance, September 30, 2021	147.4
Reportable segments | Northern Europe
Goodwill [Roll Forward]
Balance, December 31, 2020	326.6
Acquisitions	0
Currency impact	10.5
Balance, September 30, 2021	316.1
Reportable segments | APME
Goodwill [Roll Forward]
Balance, December 31, 2020	81.7
Acquisitions	0
Currency impact	3.9
Balance, September 30, 2021	77.8
Corporate
Goodwill [Roll Forward]
Balance, December 31, 2020	126
Acquisitions	0
Currency impact	0
Balance, September 30, 2021	$ 126

Goodwill and Other Intangible_7

Goodwill and Other Intangible Assets - Changes in Carrying Value of Goodwill by Reportable Segment (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill	$ 1,206.6	$ 1,225.8
Jefferson Wells
Goodwill [Roll Forward]
Goodwill	55.5
Right Management
Goodwill [Roll Forward]
Goodwill	62.1
Americas | United States
Goodwill [Roll Forward]
Goodwill	493.3	490.2
Americas | United States | Jefferson Wells
Goodwill [Roll Forward]
Goodwill	572.1	545.7
Southern Europe | France
Goodwill [Roll Forward]
Goodwill	75.6	73.3
Southern Europe | Italy
Goodwill [Roll Forward]
Goodwill	$ 4	$ 4.2

Goodwill and Other Intangible_8

Goodwill and Other Intangible Assets - Schedule of Goodwill Balances by Reporting Unit (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 1,206.6	$ 1,225.8
Jefferson Wells
Goodwill [Line Items]
Goodwill	55.5
Sweden
Goodwill [Line Items]
Goodwill	42.1	43.6
Americas | United States
Goodwill [Line Items]
Goodwill	493.3	490.2
Americas | United States | Jefferson Wells
Goodwill [Line Items]
Goodwill	572.1	545.7
Northern Europe | Netherlands
Goodwill [Line Items]
Goodwill	114.2	119.3
Northern Europe | United Kingdom
Goodwill [Line Items]
Goodwill	110.3	100.2
Southern Europe | France
Goodwill [Line Items]
Goodwill	75.6	73.3
Other Reporting Units
Goodwill [Line Items]
Goodwill	$ 292.3	$ 343.7

Retirement Plans - Components o

Retirement Plans - Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5.5	$ 5.3	$ 16.6	$ 15.5
Interest cost	1.5	2.4	4.6	7
Expected return on assets	(3.1)	(3.4)	(9.2)	(10)
Settlement loss	0	0	0	10.2
Other	1.4	0.9	4.1	2.5
Total benefit cost (credit)	5.3	5.2	16.1	25.2
Retiree Health Care Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0.1	0.1	0.2	0.3
Prior service credit	(0.2)	(0.1)	(0.6)	(0.5)
Other		0	0.1	0
Total benefit cost (credit)	$ (0.1)	$ 0	$ (0.3)	$ (0.2)

Retirement Plans - Additional I

Retirement Plans - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	Feb. 29, 2020	Jan. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Pension liability			$ 0	$ 0	$ 0	$ 6.6
Remaining plan assets in excess of pension liability							$ 16.6
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Contributions to pension plans		$ 19.2
Settlement of lump sum payments	$ 3.2
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions to pension plans			5.1		14.5
Estimated employer contribution to pension plans during remainder of current fiscal year			16		16
Retiree Health Care Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions to retiree health care plan			$ 0.2		$ 0.8

Shareholders' Equity - Componen

Shareholders' Equity - Components of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ 2,483.2	$ 2,396.7	$ 2,377.4	$ 2,453.6	$ 2,605.4	$ 2,542.8	$ 2,639	$ 2,761.5
Foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(172)			(72.1)
Translation loss on derivative instruments, net of income tax benefit of $(18.8) and (34.9), respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(37.1)			(81.2)
Translation loss on long-term intercompany loans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(127.6)			(133.3)
Defined benefit pension plans and Retiree health care plan | Defined benefit pension plans, net of income tax benefit of $(34.0) and $(38.2), respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(108.2)			(111.4)
Defined benefit pension plans and Retiree health care plan | Retiree health care plan, net of income taxes of $1.7 and $1.8, respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	0.3			0.7
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (444.6)	$ (422.3)	$ (437.8)	$ (397.3)	$ (432.8)	$ (479.1)	$ (505.8)	$ (441)

Shareholders' Equity - Compon_2

Shareholders' Equity - Components of Accumulated Other Comprehensive Loss, Net of Tax (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Translation loss on derivative instruments, net of income tax benefit of $(18.8) and (34.9), respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, income taxes	$ (18.8)	$ (34.9)
Defined benefit pension plans and Retiree health care plan | Defined benefit pension plans, net of income tax benefit of $(34.0) and $(38.2), respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, income taxes	(34)	(38.2)
Defined benefit pension plans and Retiree health care plan | Retiree health care plan, net of income taxes of $1.7 and $1.8, respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, income taxes	$ 1.7	$ 1.8

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	May 07, 2021	May 08, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Aug. 31, 2021	Aug. 31, 2019	Aug. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Net earnings, net of tax, attributable to noncontrolling interests			$ 4.9	$ 6	$ 13.1	$ 32.3
Dividend declared per share	$ 1.26	$ 1.09
Dividend declared date	May 7, 2021	May 8, 2020
Dividend payable date	Jun. 15, 2021	Jun. 15, 2020
Dividends Payable, Date of Record	Jun. 1, 2021	Jun. 1, 2020
Shares authorized to be repurchased (in shares)							4,000,000	6,000,000	6,000,000
Shares repurchased (in shares)						900,000
Total cost of shares repurchased						$ 63.8
August 2021 Authorization
Equity, Class of Treasury Stock [Line Items]
Shares remaining authorized for repurchase (in shares)			4		4
August 2019 Authorization
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)					1,500,000	100,000
Total cost of shares repurchased					$ 150.1
Shares remaining authorized for repurchase (in shares)			1,900,000		1,900,000
August 2018 Authorization
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)						800,000
Shares remaining authorized for repurchase (in shares)			0		0
Non-Controlling Interests
Equity, Class of Treasury Stock [Line Items]
Net earnings, net of tax, attributable to noncontrolling interests			$ 0.1	$ 0.1	$ 1	$ 0.9

Interest and Other Expenses, _3

Interest and Other Expenses, Net - Schedule of Interest and Other Expenses, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Nonoperating Income (Expense) [Abstract]
Interest expense	$ 9.6	$ 10.8	$ 29.5	$ 32.3
Interest income	(2.9)	(3.1)	(9.1)	(9.9)
Foreign exchange loss	1.4	0.6	4.5	4.2
Miscellaneous (income) expense, net	(3.2)	(2.3)	(11.8)	5.7
Interest and other expenses, net	$ 4.9	$ 6	$ 13.1	$ 32.3

Interest and Other Expenses, _4

Interest and Other Expenses, Net - Schedule of Interest and Other Expenses, Net (Parenthetical) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
United States Plans
Other Non Operating Income Expense [Line Items]
Pension settlement loss	$ 10.2

Derivative Financial Instrume_3

Derivative Financial Instruments and Fair Value Measurements - Additional Information (Details) € in Millions, £ in Millions, $ in Millions	1 Months Ended
	Sep. 30, 2021GBP (£)	Sep. 30, 2021EUR (€)	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)	Sep. 30, 2019USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forecasted IT contract payment | £	£ 6
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value measured on a recurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation plan assets			$ 130.9	$ 119.4
Euro-denominated notes | Estimate of fair value measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt			1,090	1,159.1
Euro-denominated notes | Carrying value | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt			$ 1,038.4	$ 1,094.5
Cross-currency swap | Cash flow hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		€ 202.3			$ 55.4
Fixed annual interest rate		1.256%	1.256%		1.143%
Designated as hedging instrument | Notes due September 2022 | Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		€ 400	$ 462.8
Designated as hedging instrument | Notes Due June 2026 | Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		€ 500	$ 575.6

Derivative Financial Instrume_4

Derivative Financial Instruments and Fair Value Measurements - Effect of Net Investment Hedges on AOCI (Details) - Net Investment Hedging - Designated as hedging instrument - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Euro-denominated notes
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income	$ (24.6)	$ (43.8)	$ 57	$ (45.7)
Cross-currency swap
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income	$ (1.6)	$ 11.3	$ 14.9	$ 8.9

Derivative Financial Instrume_5

Derivative Financial Instruments and Fair Value Measurements - Impact of Changes in Fair Values of Derivatives Designated as Cash Flow Hedges on OCI, AOCI and Earnings (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Selling and administrative expenses
Derivative [Line Items]
(Loss) Gain Reclassified from AOCI into Income			$ 0	$ 0
Cash flow hedge | Designated as hedging instrument | Selling and administrative expenses
Derivative [Line Items]
(Loss) Gain Reclassified from AOCI into Income	$ 0	$ 0
Cross-currency swap | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Gain (Loss) Recognized in OCI	4	(3.2)	(0.9)	1.6
Cross-currency swap | Cash flow hedge | Designated as hedging instrument | Interest and Other Expenses , Net
Derivative [Line Items]
(Loss) Gain Reclassified from AOCI into Income	(3.9)	(3.3)	(0.7)	1.4
Foreign currency forward contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI			$ (0.2)	$ 0
Foreign currency forward contracts | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ (0.2)	$ 0

Derivative Financial Instrume_6

Derivative Financial Instruments and Fair Value Measurements - Effect of Forward Contracts not Designated as Hedging Instrument (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Not designated as hedging instrument | Foreign Exchange Forward | Interest and Other Expenses , Net
Derivative [Line Items]
Amount of (Loss) Gain Recognized in Income	$ 3	$ 0	$ (8.5)	$ 0.3

Derivative Financial Instrume_7

Derivative Financial Instruments and Fair Value Measurements - Fair Value of Derivative and Non-Derivative Assets and Liabilities on the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Assets	$ 12.6	$ 13.1
Liabilities	1,056.6	1,125
Not designated as hedging instrument | Foreign currency forward contracts | Accounts receivable, net
Derivatives, Fair Value [Line Items]
Assets	0.1	1
Not designated as hedging instrument | Foreign currency forward contracts | Accrued liabilities
Derivatives, Fair Value [Line Items]
Liabilities	2.1	0
Cash flow hedge | Designated as hedging instrument | Cross-currency swap | Prepaid expenses and other assets
Derivatives, Fair Value [Line Items]
Assets	12.5	12.1
Cash flow hedge | Designated as hedging instrument | Foreign currency forward contracts | Accrued liabilities
Derivatives, Fair Value [Line Items]
Liabilities	0.2	0
Net Investment Hedging | Designated as hedging instrument | Cross-currency swap | Accrued liabilities
Derivatives, Fair Value [Line Items]
Liabilities	15.9	30.5
Net Investment Hedging | Designated as hedging instrument | Euro Notes | Long-term debt
Derivatives, Fair Value [Line Items]
Liabilities	$ 1,038.4	$ 1,094.5

Leases - Components of Lease Ex

Leases - Components of Lease Expense and Other Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease expense		$ 35.1	$ 37.4	$ 105.5	$ 109
Short-term lease expense		1.4	1.8	4.5	9
Variable lease expense	[1]	4.6	3.9	13.6	12.4
Total lease expense		$ 41.1	$ 43.1	123.6	130.4
Supplemental Cash Flow Information
Cash paid for amounts included in the measurement of operating lease liabilities				104.7	107.9
Operating ROU assets obtained in exchange for lease obligations				$ 35.9	$ 56.1
[1]	Other lease expense includes variable lease expense and sublease income.

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions		Sep. 30, 2021	Dec. 31, 2020
Operating Leases
Operating lease ROU assets		$ 360.4	$ 400.7
Operating lease liabilities - current	[1]	108	119.3
Operating lease liabilities - long-term		268.5	305.1
Total operating lease liabilities		$ 376.5	$ 424.4
[1]	Operating lease liabilities - current are included in accrued expenses on our Consolidated Balance Sheets.

Leases - Weighted Average Remai

Leases - Weighted Average Remaining Lease Term and Discount Rate (Details)	Sep. 30, 2021	Sep. 30, 2020
Weighted Average Remaining Lease Term
Operating leases	5 years	5 years 4 months 24 days
Weighted Average Discount Rate
Operating leases	2.80%	2.90%

Leases - Maturities of Operatin

Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Period Ending March 31, 2021
Remainder of 2021	$ 32.5
2022	109.2
2023	84.6
2024	58.7
2025	37.8
2026	28.6
Thereafter	56.5
Total future undiscounted lease payments	407.9
Less imputed interest	(31.4)
Total operating lease liabilities	$ 376.5	$ 424.4

Segment Data - Schedule of Segm

Segment Data - Schedule of Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenues from services	$ 5,140.6	$ 4,584.8	$ 15,342.1	$ 12,946.1
Operating unit profit	190.6	97.3	543.2	219.8
Corporate expenses	(36)	(29.1)	(110.5)	(83.5)
Goodwill impairment charge	0	0	0	(66.8)
Intangible asset amortization expense	(4.1)	(6.6)	(13.9)	(20.2)
Operating profit	150.5	61.6	418.8	49.3
Interest and other expenses, net	(4.9)	(6)	(13.1)	(32.3)
Earnings before income taxes	145.6	55.6	405.7	17
Americas
Segment Reporting Information [Line Items]
Revenues from services	997.6	929.1	3,044.8	2,776.7
Operating unit profit	40.8	31.5	140.9	67.8
Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	2,382.6	2,112.4	6,965.3	5,527.9
Operating unit profit	110.7	71.6	299.4	136.7
Northern Europe
Segment Reporting Information [Line Items]
Revenues from services	1,166.6	947.7	3,490.9	2,881.9
Operating unit profit	16.5	(22.5)	39.2	(36.3)
APME
Segment Reporting Information [Line Items]
Revenues from services	611.2	595.6	1,858.5	1,759.6
Operating unit profit	22.6	16.7	63.7	51.6
Northern Europe and APME
Segment Reporting Information [Line Items]
Revenues from services	5,158	4,584.8	15,359.5	12,946.1
Intercompany Eliminations
Segment Reporting Information [Line Items]
Revenues from services	(17.4)	0	(17.4)	0
United States | Americas
Segment Reporting Information [Line Items]
Revenues from services	644.9	578.8	1,882.5	1,705.6
Other Americas | Americas
Segment Reporting Information [Line Items]
Revenues from services	352.7	350.3	1,162.3	1,071.1
France | Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	1,317	1,205.3	3,852.7	3,035.1
Italy | Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	456.4	351.2	1,328.3	947.4
Other Southern Europe | Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	609.2	555.9	1,784.3	1,545.4
Reportable subsegments | United States | Americas
Segment Reporting Information [Line Items]
Revenues from services	644.9	578.8	1,882.5	1,705.6
Operating unit profit	28.2	19.3	95.4	30.8
Reportable subsegments | Other Americas | Americas
Segment Reporting Information [Line Items]
Revenues from services	352.7	350.3	1,162.3	1,071.1
Operating unit profit	12.6	12.2	45.5	37
Reportable subsegments | France | Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	1,317	1,205.3	3,852.7	3,035.1
Operating unit profit	61.6	51.5	169.9	87
Reportable subsegments | Italy | Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	456.4	351.2	1,328.3	947.4
Operating unit profit	30.8	15.4	81.9	40.6
Reportable subsegments | Other Southern Europe | Southern Europe
Segment Reporting Information [Line Items]
Revenues from services	609.2	555.9	1,784.3	1,545.4
Operating unit profit	$ 18.3	$ 4.7	$ 47.6	$ 9.1

Segment Data - Schedule of Se_2

Segment Data - Schedule of Segment Data (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenues from services	$ 5,140.6	$ 4,584.8	$ 15,342.1	$ 12,946.1
Franchise revenue	253.3	236.9	755.9	447.3
Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	3.9	3.8	11	9.9
Americas
Segment Reporting Information [Line Items]
Revenues from services	997.6	929.1	3,044.8	2,776.7
Americas | United States
Segment Reporting Information [Line Items]
Revenues from services	644.9	578.8	1,882.5	1,705.6
Americas | United States | Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	3.3	3.4	9.4	8.8
Franchise revenue	$ 121.3	$ 116.9	$ 353.4	$ 315.7