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FAIR VALUE MEASUREMENTS (Details - Quantitative Information About Level 3 Fair Value Measurements - Assets) (Level 3, USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Corporate debt | Discounted cash flow
    
Fair value inputs, assets, quantitative information    
Fair Value $ 1,166 $ 788
Corporate debt | Discounted cash flow | Minimum
    
Fair value inputs, assets, quantitative information    
Yield 2.87% 0.00%
Corporate debt | Discounted cash flow | Maximum
    
Fair value inputs, assets, quantitative information    
Yield 8.28% 14.29%
Corporate debt | Discounted cash flow | Weighted-average
    
Fair value inputs, assets, quantitative information    
Yield 5.57% 6.64%
Residential mortgage backed securities | Discounted cash flow
    
Fair value inputs, assets, quantitative information    
Fair Value 16,252 14,419
Residential mortgage backed securities | Discounted cash flow | Minimum
    
Fair value inputs, assets, quantitative information    
Yield 2.59% 2.54%
Constant prepayment rate 0.00% 0.00%
Loss severity 43.85% 42.60%
Constant default rate 3.98% 3.98%
Residential mortgage backed securities | Discounted cash flow | Maximum
    
Fair value inputs, assets, quantitative information    
Yield 6.85% 7.40%
Constant prepayment rate 10.13% 10.35%
Loss severity 79.75% 79.07%
Constant default rate 11.79% 12.22%
Residential mortgage backed securities | Discounted cash flow | Weighted-average
    
Fair value inputs, assets, quantitative information    
Yield 4.72% 4.97%
Constant prepayment rate 5.05% 4.97%
Loss severity 61.80% 60.84%
Constant default rate 7.89% 8.10%
Certain CDO/ABS | Discounted cash flow
    
Fair value inputs, assets, quantitative information    
Fair Value 5,411 5,414
Certain CDO/ABS | Discounted cash flow | Minimum
    
Fair value inputs, assets, quantitative information    
Yield 5.00% 5.20%
Constant prepayment rate 5.30% 5.20%
Loss severity 46.40% 48.60%
Constant default rate 2.90% 3.20%
Certain CDO/ABS | Discounted cash flow | Maximum
    
Fair value inputs, assets, quantitative information    
Yield 10.80% 11.50%
Constant prepayment rate 13.30% 10.80%
Loss severity 61.30% 63.40%
Constant default rate 15.60% 16.20%
Certain CDO/ABS | Discounted cash flow | Weighted-average
    
Fair value inputs, assets, quantitative information    
Yield 8.90% 9.40%
Constant prepayment rate 9.50% 8.20%
Loss severity 53.90% 56.40%
Constant default rate 8.40% 9.00%
Commercial mortgage backed securities | Discounted cash flow
    
Fair value inputs, assets, quantitative information    
Fair Value 6,017 5,847
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 13.70% 14.69%
Commercial mortgage backed securities | Discounted cash flow | Weighted-average
    
Fair value inputs, assets, quantitative information    
Yield 5.09% 5.58%
CDO/ABS - Direct Investment book | Binomial Expansion Technique
    
Fair value inputs, assets, quantitative information    
Fair Value 565 557
CDO/ABS - Direct Investment book | Binomial Expansion Technique | Minimum
    
Fair value inputs, assets, quantitative information    
Recovery rates 5.00% 6.00%
Diversity score 6 5
Weighted average life 1 year 3 months 18 days 1 year 0 months 25 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique | Maximum
    
Fair value inputs, assets, quantitative information    
Recovery rates 61.00% 63.00%
Diversity score 29 35
Weighted average life 10 years 6 months 9 years 5 months 19 days
CDO/ABS - Direct Investment book | Binomial Expansion Technique | Weighted-average
    
Fair value inputs, assets, quantitative information    
Recovery rates 25.00% 25.00%
Diversity score 13.1 12
Weighted average life 5 years 3 months 18 days 4 years 10 months 10 days
Obligations of states, municipalities and political subdivisions | Discounted cash flow
    
Fair value inputs, assets, quantitative information    
Fair Value $ 1,138 $ 920
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Minimum
    
Fair value inputs, assets, quantitative information    
Yield 4.44% 4.94%
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Maximum
    
Fair value inputs, assets, quantitative information    
Yield 5.30% 5.86%
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Weighted-average
    
Fair value inputs, assets, quantitative information    
Yield 4.87% 5.40%