Other Operating Expense, Net - Summary (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Operating Expense, Net [Abstract]
Foreign currency transaction losses (gains), net	$ 20.9	$ 8.1	$ (1.9)
Restructuring charges	92.9	17.1	12.7
Shareholder litigation settlement recoveries	0.0	(6.0)	(9.5)
Acquisition related expenses and non-cash charges	97.3	53.8	9.8
(Gains) losses on asset and business disposals	0.0	0.8	(1.1)
Other, net	6.1	1.9	(0.9)
Total other operating expense, net	$ 217.2	$ 75.7	$ 9.1