Schedule of U.S. Federal, State and Foreign Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal	$ 117.2	$ 103.4	$ 146.7
State, Current	24.9	23.4	29.0
Foreign, Current	10.1	13.0	11.2
Current income tax expense (benefit)	152.2	139.8	186.9
U.S. federal, Deferred	3.6	5.4	(235.0)
State, Deferred	(0.5)	4.6	3.8
Foreign, Deferred	2.5	1.1	(6.4)
Deferred income tax expense (benefit)	5.6	11.1	(237.6)
Recorded tax expense	$ 157.8	$ 150.9	$ (50.7)