SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Rollforward of allowance for credit losses related to the adoption of the Financial Instruments Credit Losses Standard) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Summary of Significant Accounting Policies [Line Items]
Securities available for sale, balance, beginning of year	$ 198		$ 0
Securities available for sale, purchased credit deteriorated initial allowance and purchases of available for sale debt securities accounted for as PCD assets	0		33
Securities available for sale, incremental increase (decrease) recognized in income	81		310
Securities available for sale, write-offs and other changes in the allowance	(43)		(107)
Securities available for sale, balance, end of period	236		236
Mortgage and other loan receivables, balance, beginning of year	794	$ 407	438	$ 397
Mortgage and other loan receivables, incremental increase (decrease) recognized in income	3	25	53	35
Mortgage and other loans receivable, write-offs and other changes in the allowance	0	(2)	(12)	(2)
Mortgage and other loan receivables, balance, end of period	797	$ 430	797	$ 430
Reinsurance recoverables, balance, beginning of year	364		151
Reinsurance recoverables, incremental increase (decrease) recognized in income	0		5
Reinsurance recoverables, write-offs and other changes in allowance	6		(10)
Reinsurance recoverables, balance, end of period	370		370
Premiums and other receivables, balance, beginning of year	212		178
Premiums and other receivables, incremental increase (decrease) recognized in income	7		9
Premiums and other receivables, write-offs and other changes in the allowance	(4)		(6)
Premiums and other receivables, balance, end of period	215		215
Contractual deductible recoverables, balance, beginning of year	14		0
Contractual deductible recoverables, incremental increase (decrease) recognized in income	0		0
Contractual deductible recoverables, write-offs and other changes in the allowance	0		0
Contractual deductible recoverables, balance, end of period	14		14
Commercial mortgage loan commitments, balance, beginning of year	58		0
Commercial mortgage loan commitments, incremental increase (decrease) recognized in income	8		14
Commercial mortgage loan commitments, write-offs and other changes in the allowance	0		1
Commercial mortgage loan commitments, balance, end of period	66		66
Total, beginning of year	1,640		767
Total, incremental increase (decrease) recognized in income	99		391
Total, write-offs and other changes in the allowance	(41)		(134)
Total, end of period	1,698		1,698
Retained earnings	(15,838)		(15,838)		$ (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		0
Mortgage and other loan receivables, balance, beginning of year	0		318
Reinsurance recoverables, balance, beginning of year	0		224
Premiums and other receivables, balance, beginning of year	0		34
Contractual deductible recoverables, balance, beginning of year	0		14
Commercial mortgage loan commitments, balance, beginning of year	0		51
Total, beginning of year	$ 0		641
Secondary impacts to certain long-duration insurance contracts			(27)
Tax impact			$ (127)
Retained earnings					$ 487