Segment Data - Schedule of Segment Data (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenues from services	$ 5,074.1	$ 5,277.1	$ 10,217.4	$ 10,201.5
Franchise revenue	275.6	253.5	540.8	502.6
Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	3.9	3.5	7.5	7.1
Americas
Segment Reporting Information [Line Items]
Revenues from services	1,262.7	1,044.3	2,513.9	2,047.2
Americas | United States
Segment Reporting Information [Line Items]
Revenues from services	903.9	628.8	1,793.3	1,237.6
Americas | United States | Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	3.1	3.0	6.0	6.1
Franchise revenue	$ 128.1	$ 114.6	$ 238.9	$ 232.1