Income Taxes (Income Tax Components) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 43.6	$ 44.9	$ 26.0
State	15.5	15.5	7.5
Foreign	3.0	1.7	1.3
Total Current	62.1	62.1	34.8
Deferred:
Federal and State	19.5	1.8	19.9
Total	$ 81.6	$ 63.9	$ 54.7