DERIVATIVE INSTRUMENTS - Net Derivative Gains (Losses) Recognized on Fair Value Derivatives and the Related Hedged Item (Details) (Fixed Maturities, Foreign currency forwards, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Fixed Maturities | Foreign currency forwards
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized for derivatives	$ (535)
Gains (losses) on derivatives excluded from effectiveness testing	(8)
Gains (losses) on derivatives included in effectiveness testing	(527)
Gains (losses) recognized for hedged items	528
Ineffectiveness recognized for fair value hedge	$ 1