Income Taxes - Schedule of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal and state	$ (12.8)	$ (13.0)	$ (48.6)
Foreign	7.4	12.1	11.9
Total current	(5.4)	(0.9)	(36.7)
Deferred:
Federal and state	(7.0)	98.7	(8.3)
Foreign	(37.1)	2.7	3.9
Total deferred	(44.1)	101.4	(4.4)
Provision (benefit) for taxes on income	$ (49.5)	$ 100.5	$ (41.1)