Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill activity:
Balance at beginning of year	$ 6,151.0	$ 7,631.4
Impairments		(1,484.3)
Foreign currency translation	1.6	3.9
Balance at end of year	6,152.6	6,151.0	$ 7,631.4
Americas
Goodwill activity:
Balance at beginning of year	6,151.0	6,146.6
Impairments		0.0	(668.3)
Foreign currency translation	1.6	4.4
Balance at end of year	6,152.6	6,151.0	6,146.6
EMEA&APAC
Goodwill activity:
Balance at beginning of year	0.0	1,484.8
Impairments		(1,484.3)
Foreign currency translation	0.0	(0.5)
Balance at end of year	$ 0.0	$ 0.0	$ 1,484.8