Restructuring - Summary of Restructuring Activities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	$ 139.0	$ 157.7	$ 108.7
Charges	100.9	132.0	194.2
Utilization, Cash	(92.8)	(127.4)	(135.7)
Utilization, Non-cash	(17.7)	(23.3)	(9.5)
Accrual as of end of period	129.4	139.0	157.7
Employee termination benefits
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	134.8	152.8	103.3
Charges	85.1	104.2	167.8
Utilization, Cash	(87.5)	(122.2)	(118.3)
Utilization, Non-cash	(6.3)	0.0	0.0
Accrual as of end of period	126.1	134.8	152.8
Asset impairments
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0	0.0	0.0
Charges	11.4	23.3	9.5
Utilization, Cash	0.0	0.0	0.0
Utilization, Non-cash	(11.4)	(23.3)	(9.5)
Accrual as of end of period	0.0	0.0	0.0
Contract termination costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	4.2	4.9	5.4
Charges	0.3	2.0	3.0
Utilization, Cash	(1.2)	(2.7)	(3.5)
Utilization, Non-cash	0.0	0.0	0.0
Accrual as of end of period	3.3	4.2	4.9
Other related costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0	0.0	0.0
Charges	4.1	2.5	13.9
Utilization, Cash	(4.1)	(2.5)	(13.9)
Utilization, Non-cash	0.0	0.0	0.0
Accrual as of end of period	$ 0.0	$ 0.0	$ 0.0