FAIR VALUE MEASUREMENTS (Details - Quantitative Information about Level 3 Fair Value Measurements, Assets)) - Level 3 - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Corporate debt
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 498	$ 642
Corporate debt | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	3.41%	5.63%
Corporate debt | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	6.38%	12.45%
Corporate debt | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.90%	9.04%
Residential mortgage-backed securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 17,412	$ 17,280
Residential mortgage-backed securities | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	3.28%	3.13%
Constant prepayment rate	3.95%	0.99%
Loss severity	47.51%	47.21%
Constant default rate	3.28%	3.49%
Residential mortgage-backed securities | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	5.87%	6.14%
Constant prepayment rate	6.54%	8.95%
Loss severity	80.98%	79.50%
Constant default rate	8.64%	9.04%
Residential mortgage-backed securities | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.57%	4.63%
Constant prepayment rate	5.25%	4.97%
Loss severity	64.24%	63.35%
Constant default rate	5.96%	6.26%
Certain CDO/ABS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 4,368	$ 3,338
Certain CDO/ABS | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	3.67%	3.41%
Certain CDO/ABS | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	5.85%	4.98%
Certain CDO/ABS | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.76%	4.19%
Commercial mortgage backed securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 1,511	$ 2,388
Commercial mortgage backed securities | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	0.48%	0.00%
Commercial mortgage backed securities | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	10.21%	17.65%
Commercial mortgage backed securities | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	5.34%	6.62%
Obligations of states, municipalities and political subdivisions
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 1,248	$ 1,217
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.12%	4.32%
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.91%	5.10%
Obligations of states, municipalities and political subdivisions | Discounted cash flow | Weighted-average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Yield	4.52%	4.71%