Segment Data - Schedule of Segment Data (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024		Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues from services	$ 17,957.1	$ 17,853.9	[1]	$ 18,914.5
Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	16.6	14.4		14.8
Americas | United States | Franchise fees
Segment Reporting Information [Line Items]
Revenues from services	$ 10.1	$ 10.7		$ 11.9

[1] Effective January 1, 2025, our segment reporting was realigned to include our Morocco business within Other Southern Europe. Accordingly, France is now adjusted to exclude Morocco. All previously reported results have been recast to conform to the current year presentation.