POLICYHOLDER ACCOUNT BALANCES - Balances and Changes in Policyholders’ Account Balances (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	$ 3,751
Interest credited	688	$ 90	$ 82
Balance, end of the period		3,751
UL
Policyholder Account Balance [Roll Forward]
Balance, end of the period	1,186
UL | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	0
Issuances	1,208
Premiums received	361
Policy charges	(376)
Surrenders and withdrawals	(11)
Benefit payments	(23)
Net transfers from (to) separate account	0
Interest credited	27
Balance, end of the period	$ 1,186	0
Weighted-average crediting rate (years)	3.50%
Net amount at risk	$ 16,062
Cash surrender value	1,036
IUL
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	1,962
Balance, end of the period	2,431	1,962
IUL | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	1,962	1,973
Issuances	349	0
Premiums received	236	246
Policy charges	(192)	(177)
Surrenders and withdrawals	(69)	(49)
Benefit payments	(8)	(7)
Net transfers from (to) separate account	0	0
Interest credited	153	(24)
Other		0
Balance, end of the period	$ 2,431	$ 1,962	1,973
Weighted-average crediting rate (years)	2.43%	2.20%
Net amount at risk	$ 19,148	$ 18,092
Cash surrender value	1,850	1,494
EI
Policyholder Account Balance [Roll Forward]
Balance, end of the period	1,964
EI | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	0
Issuances	2,213
Premiums received	7
Policy charges	0
Surrenders and withdrawals	(251)
Benefit payments	(20)
Net transfers from (to) separate account	30
Interest credited	45
Balance, end of the period	$ 1,964	0
Weighted-average crediting rate (years)	2.87%
Net amount at risk	$ 98
Cash surrender value	1,959
EG
Policyholder Account Balance [Roll Forward]
Balance, end of the period	6,619
EG | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	0
Issuances	6,818
Premiums received	262
Policy charges	(3)
Surrenders and withdrawals	(720)
Benefit payments	(17)
Net transfers from (to) separate account	(110)
Interest credited	169
Balance, end of the period	$ 6,619	0
Weighted-average crediting rate (years)	2.41%
Net amount at risk	$ 6
Cash surrender value	6,573
SCS
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	242
Balance, end of the period	40,353	242
SCS | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	242
Issuances	31,189
Premiums received	1
Policy charges	(6)
Surrenders and withdrawals	(1,880)
Benefit payments	(172)
Net transfers from (to) separate account	(7,132)
Interest credited	3,847
Balance, end of the period	$ 40,353	242
Weighted-average crediting rate (years)	0.00%
Net amount at risk	$ 1
Cash surrender value	37,562
VUL
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	655
Balance, end of the period		655
VUL | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	655	614
Issuances		0
Premiums received		17
Policy charges		(35)
Surrenders and withdrawals		0
Benefit payments		(8)
Net transfers from (to) separate account		(49)
Interest credited		18
Other		0
Balance, end of the period		$ 655	614
Weighted-average crediting rate (years)		3.52%
Net amount at risk		$ 30,067
Cash surrender value		528
GMxB Core
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	27
Balance, end of the period		27
GMxB Core | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	27	13
Issuances		0
Premiums received		17
Policy charges		(3)
Surrenders and withdrawals		(1)
Benefit payments		0
Net transfers from (to) separate account		0
Interest credited		1
Other		0
Balance, end of the period		$ 27	13
Weighted-average crediting rate (years)		1.00%
Net amount at risk		$ 13
Cash surrender value		29
Reinsured
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	819
Balance, end of the period		819
Reinsured | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of year	$ 819	866
Issuances		0
Premiums received		52
Policy charges		(31)
Surrenders and withdrawals		(132)
Benefit payments		(21)
Net transfers from (to) separate account		(47)
Interest credited		36
Other		2
Balance, end of the period		$ 819	$ 866
Weighted-average crediting rate (years)		4.39%
Net amount at risk		$ 4,120
Cash surrender value		$ 818