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		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Summary of Significant Accounting Policies [Line Items]
Securities available for sale, balance, beginning of year	$ 211		$ 0
Securities available for sale, purchased credit deteriorated initial allowance and purchases of available for sale debt securites accounted for as PCD assets	20		33
Securities available for sale, incremental increase (decrease) recognized in income	29		227
Securities available for sale, write-offs and other changes in the allowance	(62)		(62)
Securities available for sale, balance, end of period	198		198
Mortgage and other loan receivables, balance, beginning of year	787	$ 422	438	$ 397
Mortgage and other loan receivables, incremental increase (decrease) recognized in income	19	(15)	50	10
Mortgage and other loans receivable, write-offs and other changes in the allowance	(12)	0	(12)	0
Mortgage and other loan receivables, balance, end of period	794	$ 407	794	$ 407
Reinsurance recoverables, balance, beginning of year	362		151
Reinsurance recoverables, incremental increase (decrease) recognized in income	7		5
Reinsurance recoverables, write-offs and other changes in allowance	(5)		(16)
Reinsurance recoverables, balance, end of period	364		364
Premiums and other receivables, balance, beginning of year	210		178
Premiums and other receivables, incremental increase (decrease) recognized in income	2		2
Premiums and other receivables, write-offs and other changes in the allowance	0		(2)
Premiums and other receivables, balance, end of period	212		212
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	0		7
Commercial mortgage loan commitments, write-offs and other changes in the allowance	0		0
Commercial mortgage loan commitments, balance, end of period	58		58
Total, beginning of year	1,642		767
Total, incremental increase (decrease) recognized in income	57		291
Total, write-offs and other changes in the allowance	(79)		(92)
Total, end of period	1,640		1,640
Retained earnings	(15,847)		(15,847)		$ (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