INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
U.S. federal	$ 224us-gaap_CurrentFederalTaxExpenseBenefit	$ 3us-gaap_CurrentFederalTaxExpenseBenefit	$ 19us-gaap_CurrentFederalTaxExpenseBenefit
State and local	38	8	56
Total	262us-gaap_CurrentIncomeTaxExpenseBenefit	11us-gaap_CurrentIncomeTaxExpenseBenefit	75us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred
U.S. federal	145	(47)	269
State and local	(4)	(6)	37
Total	141us-gaap_DeferredIncomeTaxExpenseBenefit	(53)us-gaap_DeferredIncomeTaxExpenseBenefit	306us-gaap_DeferredIncomeTaxExpenseBenefit
U.S. federal	369	(44)	288
State and local	34	2	93
Total	$ 403us-gaap_IncomeTaxExpenseBenefit	$ (42)us-gaap_IncomeTaxExpenseBenefit	$ 381us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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