FAIR VALUE MEASUREMENTS (Details - Quantitative Information about Level 3 Fair Value Measurements, Liabilities) $ in Millions	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
GMWB | Minimum | Measurement Input Equity Volatility [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.0615	0.0645
GMWB | Minimum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.0016	0.0035
GMWB | Minimum | Measurement Input Dynamic Lapse Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.2	0.3
GMWB | Minimum | Measurement Input Mortality Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.4	0.4
GMWB | Minimum | Measurement Input Utilization Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.9	0.9
GMWB | Minimum | Measurement Input Equity Interest Rate Correlation [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.2	0.2
GMWB | Maximum | Measurement Input Equity Volatility [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.4835	0.5125
GMWB | Maximum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.126	0.14
GMWB | Maximum | Measurement Input Dynamic Lapse Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1.8	1.7
GMWB | Maximum | Measurement Input Mortality Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1.53	1.53
GMWB | Maximum | Measurement Input Utilization Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1	1
GMWB | Maximum | Measurement Input Equity Interest Rate Correlation [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.4	0.4
GMWB | Discounted cash flow | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 1,046	$ 1,994
Index Annuities | Minimum | Measurement Input Mortality Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.42	0.42
Index Annuities | Minimum | Measurement Input Lapse Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.005	0.005
Index Annuities | Minimum | Measurement Input Options Budget [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.01	0.01
Index Annuities | Maximum | Measurement Input Mortality Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1.62	1.62
Index Annuities | Maximum | Measurement Input Lapse Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.4	0.4
Index Annuities | Maximum | Measurement Input Options Budget [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.03	0.04
Index Annuities | Discounted cash flow | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 1,890	$ 1,603
Index Life | Minimum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0	0.02
Index Life | Minimum | Measurement Input Mortality Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0	0
Index Life | Maximum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.13	0.19
Index Life | Maximum | Measurement Input Mortality Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1	0.4
Index Life | Discounted cash flow | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 414	$ 515