Income Taxes Income tax provision (benefit) from continuing operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S. federal	$ 55.5	$ 105.8	$ 60.4
State and local	8.4	4.4	4.4
Foreign	31.7	7.9	10.4
Net current tax provision (benefit)	95.6	118.1	75.2
U.S federal	11.2	(19.3)	(48.1)
State and local	5.8	8.0	1.2
Foreign	11.1	38.2	11.7
Net valuation allowance increase (decrease)	(1.4)	(25.9)	(20.2)
Deferred income tax expense (benefit)	26.7	1.0	(55.4)
Provision (benefit) for income taxes	122.3	119.1	19.8
Income Tax Refunds	0.2	0.3	0.8
Income Taxes Paid	89.9	143.1	$ 8.7
Income Taxes Receivable	16.3	2.2
Income taxes payable	$ 21.0	$ 4.5