FAIR VALUE MEASUREMENTS (Details 6) (Level 3, USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Corporate debt
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	793
Corporate debt | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	2.54%
Corporate debt | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	17.40%
Corporate debt | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	7.43%
Residential mortgage backed securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	10,219
Residential mortgage backed securities | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.92%
Constant prepayment rate	0.00%
Loss severity	42.97%
Constant default rate	4.10%
Residential mortgage backed securities | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	11.98%
Constant prepayment rate	10.57%
Loss severity	79.60%
Constant default rate	13.74%
Residential mortgage backed securities | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	8.45%
Constant prepayment rate	4.91%
Loss severity	61.29%
Constant default rate	8.92%
Certain CDO/ABS | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	2,053
Certain CDO/ABS | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	1.93%
Constant prepayment rate	0.00%
Loss severity	0.00%
Constant default rate	0.00%
Certain CDO/ABS | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	6.01%
Constant prepayment rate	47.15%
Loss severity	7.52%
Constant default rate	3.69%
Certain CDO/ABS | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	3.97%
Constant prepayment rate	16.69%
Loss severity	0.69%
Constant default rate	0.29%
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	1,508
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Recovery rates	3.00%
Diversity score	5
Weighted average life	1 year 3 months
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Recovery rates	65.00%
Diversity score	48
Weighted average life	9 years 7 months 20 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique (BET) | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Recovery rates	16.00%
Diversity score	13
Weighted average life	6 years 29 days
Commercial mortgage backed securities | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	2,932
Commercial mortgage backed securities | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	0.00%
Commercial mortgage backed securities | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	23.66%
Commercial mortgage backed securities | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	11.16%