Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill activity:
Gross carrying value of goodwill, beginning balance		$ 8,370.1	$ 8,415.5
Accumulated impairment loss, beginning period		(2,217.5)	(2,264.5)
Balance at beginning of year		6,152.6	6,151.0
Foreign currency translation, net		(15.7)	1.6
Goodwill impairment		(845.0)	0.0	$ (1,484.3)
Gross carrying value of goodwill, ending balance	$ 8,178.0	8,178.0	8,370.1	8,415.5
Accumulated impairment loss, ending period	(2,886.1)	(2,886.1)	(2,217.5)	(2,264.5)
Balance at end of year	5,291.9	5,291.9	6,152.6	6,151.0
Americas
Goodwill activity:
Gross carrying value of goodwill, beginning balance		6,852.9	6,846.4
Accumulated impairment loss, beginning period		(700.3)	(695.4)
Balance at beginning of year		6,152.6	6,151.0
Foreign currency translation, net		(15.7)	1.6
Goodwill impairment	(845.0)	(845.0)
Gross carrying value of goodwill, ending balance	6,790.4	6,790.4	6,852.9	6,846.4
Accumulated impairment loss, ending period	(1,498.5)	(1,498.5)	(700.3)	(695.4)
Balance at end of year	5,291.9	5,291.9	6,152.6	6,151.0
EMEA & APAC
Goodwill activity:
Gross carrying value of goodwill, beginning balance		1,517.2	1,569.1
Accumulated impairment loss, beginning period		(1,517.2)	(1,569.1)
Balance at beginning of year		0.0	0.0
Foreign currency translation, net		0.0	0.0
Goodwill impairment		0.0
Gross carrying value of goodwill, ending balance	1,387.6	1,387.6	1,517.2	1,569.1
Accumulated impairment loss, ending period	(1,387.6)	(1,387.6)	(1,517.2)	(1,569.1)
Balance at end of year	$ 0.0	$ 0.0	$ 0.0	$ 0.0