Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Summary of Rollforward of Allowance for Doubtful Accounts

We have an allowance for doubtful accounts recorded as an estimate of the accounts receivable balance that may not be collected. This allowance is calculated on an entity-by-entity basis with consideration for historical write-off experience, the current aging of receivables, 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.

	Balance at Beginning of Year		Provisions Charged to Earnings		Write-Offs			Translation Adjustments			Reclassifications and Other			Balance at End of Year
2023	$	109.3	$	5.4	$	(18.2	)	$	2.7		$	—		$	99.2
2022		121.6		6.2		(12.4	)		(5.8	)		(0.3	)		109.3
2021		128.1		17.9		(17.7	)		(6.5	)		(0.2	)		121.6

Schedule of Changes in Restructuring Reserve

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

	Americas(a)			Southern  Europe(b)			Northern  Europe			APME			Corporate			Total
Balance, December 31, 2021	$	1.0		$	0.8		$	21.5		$	—		$	—			23.3
Severance costs		1.7			—			0.8			0.1			—			2.6
Other costs		—			0.9			—			0.1						1.0
Costs paid		(1.7	)		(0.7	)		(11.3	)		—			—			(13.7	)
Balance, December 31, 2022	$	1.0		$	1.0		$	11.0		$	0.2		$	—		$	13.2
Severance costs		11.5			11.3			87.4			3.3			0.4			113.9
Other costs		—			2.3			33.0			—			—			35.3
Costs paid		(7.7	)		(8.7	)		(52.5	)		(3.1	)		(0.4	)		(72.4	)
Balance, December 31, 2023	$	4.8		$	5.9		$	78.9		$	0.4		$	—		$	90.0

(a)Balance related to United States was $0.2 as of December 31, 2021. In 2022, United States incurred $0.8 for severance costs and paid $0.4, leaving a $0.6 liability as of December 31, 2022. In 2023, United States incurred $7.7 for severance costs and paid $4.6, leaving a $3.7 liability as of December 31, 2023.

(b)France had a $0.6 liability as of December 31, 2021. In 2022, France incurred $0.9 for other costs and paid $0.6, leaving a $0.9 liability as of December 31, 2022. In 2023, France incurred $2.1 for severance costs, $0.4 for other costs and paid $0.9, leaving a $2.5 liability as of December 31, 2023. Balance related to Italy was $$0.3 as of December 31, 2021. In 2022, Italy paid $0.3, leaving no liability as of December 31, 2022. In 2023, Italy incurred $1.6 for severance costs and paid $0.6, leaving a $1.0 liability as of December 31, 2023.

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

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

	Fair Value Measurements Using								Fair Value Measurements Using
	December 31, 2023		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2022		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Deferred compensation plan assets	$	144.2	$	144.2	$	—	$	—	$	115.3	$	115.3	$	—	$	—
Cross-currency swaps		31.7		—		31.7		—		13.8		—		13.8		—
Foreign currency forward contracts		6.7		—		6.7		—		0.2		—		0.2		—
	$	182.6	$	144.2	$	38.4	$	—	$	129.3	$	115.3	$	14.0	$	—
Liabilities
Cross-currency swaps	$	73.3	$	—	$	73.3	$	—	$	25.8	$	—	$	25.8	$	—
Foreign currency forward contracts		2.3		—		2.3		—		—		—		—		—
	$	75.6	$	—	$	75.6	$	—	$	25.8	$	—	$	25.8	$	—

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

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

	December 31, 2023						December 31, 2022
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Goodwill(a)	$	1,586.8	$	—	$	1,586.8	$	1,628.1	$	—	$	1,628.1
Intangible assets:
Finite-lived:
Customer relationships	$	824.9	$	486.0	$	338.9	$	818.9	$	448.1	$	370.8
Other		21.5		21.2		0.3		21.3		20.2	$	1.1
		846.4		507.2		339.2		840.2		468.3		371.9
Indefinite-lived:
Tradenames(b)		52.0		—		52.0		52.0		—		52.0
Reacquired franchise rights		128.4		—		128.4		125.6		—		125.6
		180.4		—		180.4		177.6		—		177.6
Total intangible assets	$	1,026.8	$	507.2	$	519.6	$	1,017.8	$	468.3	$	549.5

(a) Balances were net of accumulated impairment loss of $749.3 and $694.2 as of December 31, 2023 and 2022, respectively.

(b) Balances were net of accumulated impairment loss of $139.5 as of both December 31, 2023 and 2022.

Summary of Property and Equipment

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

	2023		2022
Land	$	0.4	$	0.4
Buildings		6.4		6.3
Furniture, fixtures, and autos		148.5		166.4
Computer equipment		127.3		130.1
Leasehold improvements		243.9		281.7
Property and equipment	$	526.5	$	584.9