Income Tax - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Federal	$ 43.5	$ 79.0	$ 69.1
State	7.1	5.2	9.4
Foreign	(1.0)	111.4	46.7
Total current tax (benefit) expense	49.6	195.6	125.2
Deferred
Federal	163.5	101.9	128.3
State	70.4	19.5	22.2
Foreign	(53.0)	(15.2)	(42.0)
Total deferred tax (benefit) expense	180.9	106.2	108.5
Total income tax (benefit) expense	$ 230.5	$ 301.8	$ 233.7