Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ (5)	$ 0	$ 0
State	(5)	4	3
Foreign	5	0	0
Total current	(5)	4	3
Deferred:
Federal	(145)	152	127
State	(31)	3	(20)
Foreign	0	0	0
Total deferred	(176)	155	107
Non-current tax expense (benefit)	4	0	(1)
Income tax expense (benefit)	(177)	159	109
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic	84	438	186
Foreign	7	14	9
Income before income tax expense (benefit)	$ 91	$ 452	$ 195

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations, excluding the component of income tax expense for the period representing amounts paid or payable (or refundable) recognized for uncertainties.

No definition available.