FAIR VALUE MEASUREMENTS (Details - Quantitative Information about Level 3 Fair Value Measurements, Liabilities) - Discounted cash flow - Level 3 - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Index Annuities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 963	$ 715
Index Annuities | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Mortality multiplier	50.00%	50.00%
Lapse rates	0.75%	0.75%
Index Annuities | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Mortality multiplier	75.00%	75.00%
Lapse rates	66.00%	66.00%
Index Life
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 345	$ 332
Index Life | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity volatility	12.62%	13.25%
Base lapse rates	2.00%	2.00%
Mortality rates	0.00%	0.00%
Index Life | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity volatility	21.70%	22.00%
Base lapse rates	19.00%	19.00%
Mortality rates	40.00%	40.00%
GMWB and GMAB
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 2,710	$ 1,234
GMWB and GMAB | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity volatility	15.00%	15.00%
Base lapse rates	1.00%	1.00%
Dynamic lapse rates	0.20%	0.20%
Mortality multiplier	80.00%	80.00%
Utilization rates	0.00%	0.00%
Equity/Interest-rate Correlation	20.00%	20.00%
GMWB and GMAB | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity volatility	50.00%	50.00%
Base lapse rates	17.00%	17.00%
Dynamic lapse rates	25.50%	25.50%
Mortality multiplier	104.27%	104.27%
Utilization rates	70.00%	70.00%
Equity/Interest-rate Correlation	40.00%	40.00%