Income Taxes Schedule of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (1.9)	$ 22.3	$ (10.5)
State and local	1.6	1.8	0.7
Foreign	155.0	170.4	175.6
Total current	154.7	194.5	165.8
Deferred:
Federal	49.4	27.5	77.6
State and local	13.8	14.8	9.1
Foreign	(13.8)	10.8	5.0
Total deferred	49.4	53.1	91.7
Total income tax expense	$ 204.1	$ 247.6	$ 257.5