DERIVATIVE INSTRUMENTS - Fair Value and Notional Amounts of Derivatives With Counterparty Credit Risk (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Derivatives	$ 22,801	$ 13,370
Asset Derivatives Fair Value	598	345
Liability Derivatives Fair Value	(435)	(934)
AA
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Derivatives	161	161
Asset Derivatives Fair Value	4	6
Liability Derivatives Fair Value	(4)	(7)
A
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Derivatives	22,640	13,209
Asset Derivatives Fair Value	594	339
Liability Derivatives Fair Value	$ (431)	$ (927)