Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Gross goodwill	$ 8,300.0		$ 8,400.0
Accumulated impairment loss	2,200.0		$ 2,200.0
Amortization expense of intangible assets	$ 53.3	$ 54.5