Income Taxes Income tax provision (benefit) from continuing operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. federal	$ 60.4	$ (2.4)	$ (5.0)
State and local	4.4	(0.5)	0.3
Foreign	10.4	2.6	1.6
Net current tax provision (benefit)	75.2	(0.3)	(3.1)
U.S federal	(48.1)	(1.1)	(19.5)
State and local	1.2	(1.8)	(1.2)
Foreign	11.7	(26.6)	(13.3)
Net valuation allowance increase (decrease)	(20.2)	27.1	9.9
Deferred income tax expense (benefit)	(55.4)	(2.4)	(24.1)
Provision (benefit) for income taxes	19.8	(2.7)	(27.2)
Income Tax Refunds	0.8	0.1	1.6
Income Taxes Paid	8.7	16.0	$ 3.7
Income Taxes Receivable	1.7	2.0
Accrued Income Taxes, Current	$ 31.3	$ 0.0