FAIR VALUE MEASUREMENTS (Details 5) (Level 3, USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Corporate debt | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	$ 1,082,000,000	$ 775,000,000
Corporate debt | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	4.20%	0.08%
Corporate debt | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	10.58%	6.55%
Corporate debt | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	7.39%	3.31%
Residential mortgage backed securities | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	13,752,000,000	10,650,000,000
Residential mortgage backed securities | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	2.80%	2.23%
Constant prepayment rate	0.00%	0.00%
Loss severity	42.05%	43.70%
Constant default rate	3.91%	4.21%
Residential mortgage backed securities | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	7.74%	9.42%
Constant prepayment rate	9.94%	10.76%
Loss severity	79.27%	78.72%
Constant default rate	12.51%	13.30%
Residential mortgage backed securities | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	5.27%	5.82%
Constant prepayment rate	4.59%	5.03%
Loss severity	60.66%	61.21%
Constant default rate	8.21%	8.75%
Certain CDO/ABS | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	5,421,000,000	7,844,000,000
Portion of total for which yield is the only input available		6,600,000,000
Certain CDO/ABS | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	5.40%	5.41%
Constant prepayment rate	5.30%	0.00%
Loss severity	43.00%	0.00%
Constant default rate	3.40%	0.00%
Certain CDO/ABS | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	12.00%	10.67%
Constant prepayment rate	13.10%	32.25%
Loss severity	64.80%	29.38%
Constant default rate	15.70%	4.05%
Certain CDO/ABS | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	9.80%	8.04%
Constant prepayment rate	9.30%	11.82%
Loss severity	54.00%	6.36%
Constant default rate	8.50%	1.18%
Commercial mortgage backed securities | Discounted cash flow
Fair value inputs, assets, quantitative information
Fair Value	6,244,000,000	3,251,000,000
Commercial mortgage backed securities | Discounted cash flow | Minimum
Fair value inputs, assets, quantitative information
Yield	0.00%	0.00%
Commercial mortgage backed securities | Discounted cash flow | Maximum
Fair value inputs, assets, quantitative information
Yield	14.10%	19.95%
Commercial mortgage backed securities | Discounted cash flow | Weighted-average
Fair value inputs, assets, quantitative information
Yield	5.63%	7.76%
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET)
Fair value inputs, assets, quantitative information
Fair Value	$ 559,000,000	$ 1,205,000,000
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Minimum
Fair value inputs, assets, quantitative information
Recovery rates	5.00%	3.00%
Diversity score	5	4
Weighted average life	1 year	1 year 3 months 7 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Maximum
Fair value inputs, assets, quantitative information
Recovery rates	63.00%	63.00%
Diversity score	36	44
Weighted average life	9 years 5 months 19 days	9 years 1 month 10 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Weighted-average
Fair value inputs, assets, quantitative information
Recovery rates	24.00%	27.00%
Diversity score	13	13
Weighted average life	4 years 10 months 28 days	4 years 10 months 28 days