SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Rollforward of allowance for credit losses and disputes in connection with the adoption of the Financial Instruments Credit Losses Standard) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Summary of Significant Accounting Policies [Line Items]
Securities available for sale, balance, beginning of year	$ 0
Securities available for sale, purchased credit deteriorated initial allowance and purchases of available for sale debt securites accounted for as PCD assets	13
Securities available for sale, increase (decrease)	198	$ 0
Securities available for sale, balance, end of period	211
Mortgage and other loan receivables, balance, beginning of year	438	397
Mortgage and other loan receivables, increase (decrease)	31
Mortgage and other loan receivables, balance, end of period	787	$ 422
Reinsurance recoverables, balance, beginning of year	151
Reinsurance recoverables, increase (decrease)	(13)
Reinsurance recoverables, balance, end of period	362
Premiums and other receivables, balance, beginning of year	178
Premiums and other receivables, increase (decrease)	(2)
Premiums and other receivables, balance, end of period	210
Contractual deductible recoverables, balance, beginning of year	0
Contractual deductible recoverables, increase (decrease)	0
Contractual deductible recoverables, balance, end of period	14
Commercial mortgage loan commitments, balance, beginning of year	0
Commercial mortgage loan commitments, increase (decrease)	7
Commercial mortgage loan commitments, balance, end of period	58
Total, beginning of year	767
Total, increase (decrease)	221
Total, end of period	1,642
Retained earnings	(24,062)		$ (23,084)
Cumulative effect of change in accounting principle
Summary of Significant Accounting Policies [Line Items]
Securities available for sale, balance, beginning of year	0
Mortgage and other loan receivables, balance, beginning of year	318
Reinsurance recoverables, balance, beginning of year	224
Premiums and other receivables, balance, beginning of year	34
Contractual deductible recoverables, balance, beginning of year	14
Commercial mortgage loan commitments, balance, beginning of year	51
Total, beginning of year	641
Secondary impacts to certain long-duration insurance contracts	(27)
Tax impact	$ (127)
Retained earnings			$ 487