Amortizable Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
		Sep. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Foreign currency translation, Gross carrying value		$ (49.3)
Gross carrying value		2,962.4	$ 2,349.2
Foreign currency translation, Accumulated amortization		1.5
Accumulated amortization		(1,374.4)	(1,267.7)
Foreign currency translation, Net carrying value		(47.8)
Net carrying value		1,588.0	1,081.5
Purchased Customer Accounts and Other
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, excluding foreign currency translation		2,972.9	2,311.6
Accumulated amortization, excluding foreign currency translation		(1,342.3)	(1,235.3)
Net carrying value, excluding foreign currency translation		$ 1,630.6	$ 1,076.3
Weighted average life (years)	[1]	14 years 8 months 12 days	14 years 10 months 24 days
Non-compete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, excluding foreign currency translation		$ 38.8	$ 37.6
Accumulated amortization, excluding foreign currency translation		(33.6)	(32.4)
Net carrying value, excluding foreign currency translation		$ 5.2	$ 5.2
Weighted average life (years)	[1]	4 years 6 months	4 years 6 months

[1] Weighted average life calculated as of the date of acquisition.