Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
United States	$ 3.4	$ 4.1	$ (4.4)
Foreign	222.9	180.2	170.1
Current income tax expense (benefit)	226.3	184.3	165.7
Deferred:
United States	(70.0)	1.3	1.3
Foreign	(47.9)	2.1	13.8
Deferred income tax expense (benefit)	(117.9)	3.4	15.1
Income tax provision	$ 108.4	$ 187.7	$ 180.8