DERIVATIVE INSTRUMENTS - Fair Value and Notional Amounts of Derivatives With Counterparty Credit Risk (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Derivatives	$ 28,226	$ 22,475
Asset Derivatives Fair Value	523	488
Liability Derivatives Fair Value	(358)	(837)
AA
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Derivatives	161	161
Asset Derivatives Fair Value	0	1
Liability Derivatives Fair Value	(7)	(7)
A
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Derivatives	28,065	22,314
Asset Derivatives Fair Value	523	487
Liability Derivatives Fair Value	$ (351)	$ (830)