Income Taxes (Income Tax Components) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 44.4	$ 43.6	$ 44.9
State	15.8	15.5	15.5
Foreign	4.9	3.0	1.7
Total Current	65.1	62.1	62.1
Deferred:
Federal and State	31.6	19.5	1.8
Total	$ 96.7	$ 81.6	$ 63.9