Income Taxes (Income Tax Expense From Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
Federal	$ 21.2	$ 76.0	$ 55.7
State and local	4.9	3.8	4.1
Foreign	55.6	43.2	42.5
Current income tax expense	81.7	123.0	102.3
Deferred
Federal	8.8	5.8	13.1
State and local	(12.0)	(2.6)	2.3
Foreign	(0.2)	12.2	2.3
Deferred income tax expense	(3.4)	15.4	17.7
Income tax expense	$ 78.3	$ 138.4	$ 120.0