FAIR VALUE MEASUREMENTS (Details 6) (Level 3, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Policyholder contract deposits - GMWB
Significant unobservable inputs used for recurring fair value measurements
Fair value	1,047
Policyholder contract deposits - GMWB | Discounted cash flow | Minimum
Significant unobservable inputs used for recurring fair value measurements
Equity implied volatility	6.00%
Base lapse rates	1.00%
Dynamic lapse rates	0.20%
Mortality rates	0.50%
Utilization rates	0.50%
Policyholder contract deposits - GMWB | Discounted cash flow | Maximum
Significant unobservable inputs used for recurring fair value measurements
Equity implied volatility	39.00%
Base lapse rates	40.00%
Dynamic lapse rates	60.00%
Mortality rates	40.00%
Utilization rates	25.00%
Derivative Liabilities - Credit contracts
Significant unobservable inputs used for recurring fair value measurements
Fair value	1,324
Derivative Liabilities - Credit contracts | BET | Minimum
Significant unobservable inputs used for recurring fair value measurements
Recovery rates	4.00%
Diversity score	9
Weighted average life	5 years 18 days
Derivative Liabilities - Credit contracts | BET | Maximum
Significant unobservable inputs used for recurring fair value measurements
Recovery rates	36.00%
Diversity score	41
Weighted average life	9 years 8 months 19 days
Derivative Liabilities - Credit contracts | BET | Weighted-average
Significant unobservable inputs used for recurring fair value measurements
Recovery rates	18.00%
Diversity score	13
Weighted average life	5 years 11 months 5 days