Schedule of Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components Of Income Tax Expense Benefit Continuing Operations Abstract
Current: Federal	$ (60.7)	$ (47.9)	$ (127.5)
Current: State	(0.4)	(4.0)	(10.2)
Current: Foreign	9.4	9.8	7.9
Total Current	(51.7)	(42.1)	(129.8)
Deferred: Federal	(90.9)	34.1	62.7
Deferred: State	30.4	(0.2)	4.6
Deferred: Foreign	0.1	(0.5)	(1.1)
Total Deferred	(60.4)	33.4	66.2
Income tax benefit from continuing operations	(112.1)	(8.7)	(63.6)
Income tax provision (benefit) from discontinued operations	0.0	(0.3)	161.4
Total company income tax provision (benefit)	$ (112.1)	$ (9.0)	$ 97.8