Restructuring - Restructuring Reserve (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 55.8	$ 78.0	$ 102.7
Expense recorded	38.7	71.9	34.4
Payments made	(33.3)	(99.8)	(57.3)
Foreign currency translation	(3.7)	5.7	(1.8)
Ending Balance	$ 57.5	$ 55.8	$ 78.0