DERIVATIVE INSTRUMENTS - Fair Value and Notional Amounts of Derivatives With Counterparty Credit Risk (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value of Swaps	$ (63)	$ (156)
Notional Amount of Swaps	9,199	5,491
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Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value of Swaps	(63)	(156)
Notional Amount of Swaps	$ 9,199	$ 5,491