POLICYHOLDER ACCOUNT BALANCES - Balances and Changes in Policyholders' Account Balances (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Policyholder Account Balance [Roll Forward]
Interest credited	$ 323	$ 352	$ 1,070	$ 927
Universal Life
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			5,341
Balance, end of period	5,236		5,236
Universal Life | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			5,341	5,462
Issuances			0	0
Premiums received			528	558
Policy charges			(572)	(596)
Surrenders and withdrawals			(58)	(68)
Benefit payments			(169)	(156)
Net transfers from (to) separate account			0	0
Interest credited			166	168
Other			0	0
Balance, end of period	$ 5,236	$ 5,368	$ 5,236	$ 5,368
Weighted-average crediting rate	3.75%	3.66%	3.75%	3.66%
Net amount at risk	$ 36,003	$ 38,282	$ 36,003	$ 38,282
Cash surrender value	3,450	3,518	3,450	3,518
Variable Universal Life
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			4,253
Balance, end of period	4,115		4,115
Variable Universal Life | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			4,253	4,193
Issuances			0	0
Premiums received			92	109
Policy charges			(161)	(155)
Surrenders and withdrawals			(33)	(12)
Benefit payments			(82)	(69)
Net transfers from (to) separate account			(86)	94
Interest credited			132	106
Other			0	0
Balance, end of period	$ 4,115	$ 4,266	$ 4,115	$ 4,266
Weighted-average crediting rate	3.74%	3.73%	3.74%	3.73%
Net amount at risk	$ 83,850	$ 85,816	$ 83,850	$ 85,816
Cash surrender value	2,659	2,892	2,659	2,892
GMxB Legacy
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			688
Balance, end of period	644		644
GMxB Legacy | Legacy Segment
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			688	746
Issuances			0	0
Premiums received			70	49
Policy charges			9	6
Surrenders and withdrawals			(68)	(43)
Benefit payments			(75)	(76)
Net transfers from (to) separate account			0	6
Interest credited			20	22
Other			0	0
Balance, end of period	$ 644	$ 710	$ 644	$ 710
Weighted-average crediting rate	2.71%	2.71%	2.71%	2.71%
Net amount at risk	$ 23,123	$ 23,933	$ 23,123	$ 23,933
Cash surrender value	607	697	607	697
GMxB Core
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			42
Balance, end of period	12		12
GMxB Core | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			42	99
Issuances			0	0
Premiums received			37	120
Policy charges			6	(15)
Surrenders and withdrawals			(24)	(22)
Benefit payments			(1)	(2)
Net transfers from (to) separate account			(51)	(115)
Interest credited			3	4
Other			0	0
Balance, end of period	$ 12	$ 69	$ 12	$ 69
Weighted-average crediting rate	1.32%	1.05%	1.32%	1.05%
Net amount at risk	$ 3,586	$ 3,771	$ 3,586	$ 3,771
Cash surrender value	229	285	229	285
SCS
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			35,460
Balance, end of period	38,653		38,653
SCS | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			35,460	33,443
Issuances			0	0
Premiums received			5	1
Policy charges			(6)	0
Surrenders and withdrawals			(2,034)	(1,931)
Benefit payments			(191)	(156)
Net transfers from (to) separate account			2,153	5,684
Interest credited			3,266	(4,250)
Other			0	0
Balance, end of period	38,653	32,791	38,653	32,791
Net amount at risk	23	163	23	163
Cash surrender value	35,030	28,910	35,030	28,910
EQUI-VEST Individual
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			2,652
Balance, end of period	2,432		2,432
EQUI-VEST Individual | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			2,652	2,784
Issuances			0	0
Premiums received			27	37
Policy charges			0	(1)
Surrenders and withdrawals			(257)	(131)
Benefit payments			(56)	(44)
Net transfers from (to) separate account			7	25
Interest credited			56	60
Other			3	0
Balance, end of period	$ 2,432	$ 2,730	$ 2,432	$ 2,730
Weighted-average crediting rate	2.90%	2.94%	2.90%	2.94%
Net amount at risk	$ 126	$ 160	$ 126	$ 160
Cash surrender value	2,427	2,723	2,427	2,723
EQUI-VEST Group
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			12,046
Balance, end of period	11,729		11,729
EQUI-VEST Group | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			12,046	11,952
Issuances			0	0
Premiums received			460	450
Policy charges			(4)	(5)
Surrenders and withdrawals			(1,207)	(612)
Benefit payments			(55)	(55)
Net transfers from (to) separate account			210	242
Interest credited			268	142
Other			11	0
Balance, end of period	$ 11,729	$ 12,114	$ 11,729	$ 12,114
Weighted-average crediting rate	2.56%	2.55%	2.56%	2.55%
Net amount at risk	$ 51	$ 274	$ 51	$ 274
Cash surrender value	11,672	12,029	11,672	12,029
Momentum
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			703
Balance, end of period	629		629
Momentum | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period			703	705
Issuances			0	0
Premiums received			49	61
Policy charges			0	0
Surrenders and withdrawals			(105)	(101)
Benefit payments			(4)	(2)
Net transfers from (to) separate account			(24)	48
Interest credited			10	11
Other			0	0
Balance, end of period	$ 629	$ 722	$ 629	$ 722
Weighted-average crediting rate	2.33%	2.03%	2.33%	2.03%
Net amount at risk	$ 0	$ 0	$ 0	$ 0
Cash surrender value	$ 630	$ 721	$ 630	$ 721