FAIR VALUE MEASUREMENTS (Details - Quantitative Information about Level 3 Fair Value Measurements, Liabilities) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
GMWB \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 1,994	$ 1,777
GMWB \| Discounted cash flow \| Minimum \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity volatility	6.45%	13.00%
Base lapse rates	0.35%	0.50%
Dynamic lapse rates	30.00%	30.00%
Utilization rates	90.00%	100.00%
Mortality multiplier	40.00%	42.00%
Equity/Interest-rate Correlation	20.00%	20.00%
GMWB \| Discounted cash flow \| Maximum \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity volatility	51.25%	50.00%
Base lapse rates	14.00%	20.00%
Dynamic lapse rates	170.00%	170.00%
Utilization rates	100.00%	100.00%
Mortality multiplier	153.00%	161.00%
Equity/Interest-rate Correlation	40.00%	40.00%
Index Annuities \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 1,603	$ 859
Index Annuities \| Discounted cash flow \| Minimum \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Lapse rates	0.50%	1.00%
Mortality multiplier	42.00%	101.00%
Options Budget	1.00%	1.00%
Index Annuities \| Discounted cash flow \| Maximum \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Lapse rates	40.00%	66.00%
Mortality multiplier	162.00%	103.00%
Options Budget	4.00%	4.00%
Index Life \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value	$ 515	$ 381
Index Life \| Discounted cash flow \| Minimum \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Base lapse rates	2.00%	2.00%
Mortality rates	0.00%	0.00%
Index Life \| Discounted cash flow \| Maximum \| Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Base lapse rates	19.00%	19.00%
Mortality rates	40.00%	40.00%
GMWB and GMAB
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Change in equity volatilities assumption	$ 0
Change in equity/interest rate correlation assumption	$ 0

Change in equity/interest rate correlation assumption

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- Definition

Change in equity volatilities assumption

+ References

No definition available.

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- Definition

Represents the constant base lapse rates, used as an input to measure fair value.

+ References

No definition available.

+ Details

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- Definition

Represents the constant dynamic lapse rates, used as an input to measure fair value.

+ References

No definition available.

+ Details

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- Definition

Represents the correlation between Equity and Interest rate, used as an input to measure fair value.

+ References

No definition available.

+ Details

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- Definition

Represents the constant lapse rates, used as an input to measure fair value.

+ References

No definition available.

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- Definition

Represents the constant mortality rates, used as an input to measure fair value.

+ References

No definition available.

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- Definition

Fair Value Inputs Options Budget

+ References

No definition available.

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- Definition

Represents the constant utilization rates, used as an input to measure fair value.

+ References

No definition available.

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- Definition

Represents the multiplier applied to mortality rates, used as an input to measure fair value.

+ References

No definition available.

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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