VARIABLE INTEREST ENTITIES - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Variable Interest Entity [Line Items]
Proceeds of investments (payments of liabilities) held by special purpose entities	$ 0	$ 22	$ 13
Interest expense	344	369	344
Deferred tax liability	833	850
Special Purpose Entities
Variable Interest Entity [Line Items]
Proceeds of investments (payments of liabilities) held by special purpose entities		22	13
Interest expense	29	29	32
Interest income	34	34	34
Number of qualifying special purpose entities	3
Net equity in SPEs	105
Deferred tax liability	180
Buyer-sponsored SPEs
Variable Interest Entity [Line Items]
Proceeds of investments (payments of liabilities) held by special purpose entities		184	110
Restricted financial investments	615	615
Weighted average interest rate	5.50%	5.10%
Buyer-sponsored SPEs | Restricted bank financial instruments due in 2019
Variable Interest Entity [Line Items]
Restricted financial investments	253
Investment, maturity date	Dec. 31, 2019
Buyer-sponsored SPEs | Restricted bank financial instruments due in 2020
Variable Interest Entity [Line Items]
Restricted financial investments	362
Investment, maturity date	Dec. 31, 2020
Monetization SPEs
Variable Interest Entity [Line Items]
Proceeds of investments (payments of liabilities) held by special purpose entities		(162)	(97)
Long-term notes	511	511
Weighted average interest rate	5.60%	5.30%
Monetization SPEs | Long-term debt due in 2019
Variable Interest Entity [Line Items]
Long-term notes	209
Debt, maturity date	Dec. 31, 2019
Monetization SPEs | Long-term debt due in 2020
Variable Interest Entity [Line Items]
Long-term notes	$ 302
Debt, maturity date	Dec. 31, 2020