FAIR VALUE MEASUREMENTS (Details 5) (Level 3, USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Corporate debt | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	$ 1,090
Corporate debt | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	4.09%
Corporate debt | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	10.93%
Corporate debt | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	7.51%
Residential mortgage backed securities | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	12,119
Residential mortgage backed securities | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	2.88%
Constant prepayment rate	0.00%
Loss severity	42.79%
Constant default rate	4.23%
Residential mortgage backed securities | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	7.41%
Constant prepayment rate	9.85%
Loss severity	76.74%
Constant default rate	12.92%
Residential mortgage backed securities | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	5.14%
Constant prepayment rate	4.61%
Loss severity	59.76%
Constant default rate	8.57%
Certain CDO/ABS | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	5,894
Portion of total for which yield is the only input available	285
Certain CDO/ABS | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	5.60%
Constant prepayment rate	5.20%
Loss severity	42.20%
Constant default rate	3.20%
Certain CDO/ABS | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	11.70%
Constant prepayment rate	14.00%
Loss severity	64.60%
Constant default rate	15.80%
Certain CDO/ABS | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	9.50%
Constant prepayment rate	9.40%
Loss severity	53.50%
Constant default rate	8.30%
Commercial mortgage backed securities | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	4,328
Commercial mortgage backed securities | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	0.00%
Commercial mortgage backed securities | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	17.11%
Commercial mortgage backed securities | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	6.83%
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET)
Fair value inputs, assets, quantitative information
Fair Value	$ 487
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Minimum
Fair value inputs, assets, quantitative information
Recovery rates	4.00%
Diversity score	5
Weighted average life	1 year 2 months 16 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Maximum
Fair value inputs, assets, quantitative information
Recovery rates	63.00%
Diversity score	41
Weighted average life	10 years 1 month 6 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Weighted-average
Fair value inputs, assets, quantitative information
Recovery rates	21.00%
Diversity score	14
Weighted average life	5 years 3 months 4 days