FAIR VALUE MEASUREMENTS (Details - Quantitative Information about Level 3 Fair Value Measurements, Liabilities) $ in Millions	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
GMWB | Minimum | Measurement Input Equity Volatility [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.0585	0.0605
GMWB | Minimum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.0016	0.0016
GMWB | Minimum | Measurement Input Dynamic Lapse Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.2	0.2
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	0.4625	0.4765
GMWB | Maximum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.126	0.126
GMWB | Maximum | Measurement Input Dynamic Lapse Multiplier [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1.8	1.8
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	$ 2,023	$ 1,943
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	0.04	0.03
Index Annuities | Discounted cash flow | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 2,382	$ 1,778
Indexed Life | Minimum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0	0
Indexed Life | Minimum | Measurement Input Mortality Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0	0
Indexed Life | Maximum | Measurement Input Base Lapse Rates [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	0.13	0.13
Indexed Life | Maximum | Measurement Input Mortality Rate [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Embedded derivative liability, measurement input	1	1
Indexed Life | Discounted cash flow | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 448	$ 374