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Segment Data - Schedule of Segment Data (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues from services	$ 20,724.4	$ 18,001.0	$ 20,863.5
Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	15.3	14.1	18.4
United States
Segment Reporting Information [Line Items]
Revenues from services		2,327.2
Americas
Segment Reporting Information [Line Items]
Revenues from services	4,263.7	3,792.4	4,278.6
Americas | United States
Segment Reporting Information [Line Items]
Revenues from services	2,743.3	2,327.2
Americas | United States | Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	$ 12.8	$ 12.6	$ 15.6

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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