FAIR VALUE MEASUREMENTS (Details - Quantitative Information about Level 3 Fair Value Measurements, Assets)) - Level 3 - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Corporate debt
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 642	$ 1,145
Corporate debt | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	5.63%	3.46%
Corporate debt | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	12.45%	8.75%
Corporate debt | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	9.04%	6.10%
Residential mortgage-backed securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 17,280	$ 17,353
Residential mortgage-backed securities | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	3.13%	2.67%
Constant prepayment rate	0.99%	0.59%
Loss severity	47.21%	46.04%
Constant default rate	3.49%	3.67%
Residential mortgage-backed securities | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	6.14%	6.64%
Constant prepayment rate	8.95%	9.35%
Loss severity	79.50%	79.56%
Constant default rate	9.04%	9.96%
Residential mortgage-backed securities | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.63%	4.65%
Constant prepayment rate	4.97%	4.97%
Loss severity	63.35%	62.80%
Constant default rate	6.26%	6.82%
Certain CDO/ABS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 3,338	$ 5,282
Certain CDO/ABS | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	3.41%	4.70%
Certain CDO/ABS | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.98%	9.70%
Certain CDO/ABS | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.19%	7.10%
Commercial mortgage backed securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 2,388	$ 2,687
Commercial mortgage backed securities | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	0.00%	0.00%
Commercial mortgage backed securities | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	17.65%	17.29%
Commercial mortgage backed securities | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	6.62%	6.06%
Obligations of states, municipalities and political subdivisions
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 1,217	$ 1,178
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.32%	3.90%
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	5.10%	4.62%
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.71%	4.26%