POLICYHOLDER ACCOUNT BALANCES - Balances and Changes in Policyholders’ Account Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Policyholder Account Balance [Roll Forward]
Interest credited	$ 262	$ 23
UL
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	1,186
Balance, end of the period	1,180
UL | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	1,186
Issuances	0
Premiums received	115
Policy charges	(121)
Surrenders and withdrawals	(4)
Benefit payments	(5)
Net transfers from (to) separate account	0
Interest credited	9
Balance, end of the period	$ 1,180
Weighted-average crediting rate (years)	3.56%
Net amount at risk	$ 15,806
Cash surrender value	1,034
IUL
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	2,431
Balance, end of the period	2,460
IUL | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	2,431	1,962
Issuances	0	0
Premiums received	61	58
Policy charges	(49)	(44)
Surrenders and withdrawals	(31)	(7)
Benefit payments	(5)	(3)
Net transfers from (to) separate account	0	0
Interest credited	53	30
Other		0
Balance, end of the period	$ 2,460	$ 1,996
Weighted-average crediting rate (years)	2.46%	2.23%
Net amount at risk	$ 18,940	$ 18,004
Cash surrender value	1,872	1,505
EI
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	1,964
Balance, end of the period	1,893
EI | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	1,964
Issuances	0
Premiums received	3
Policy charges	0
Surrenders and withdrawals	(78)
Benefit payments	(6)
Net transfers from (to) separate account	(4)
Interest credited	14
Balance, end of the period	$ 1,893
Weighted-average crediting rate (years)	2.89%
Net amount at risk	$ 94
Cash surrender value	1,889
EG
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	6,619
Balance, end of the period	6,544
EG | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	6,619
Issuances	0
Premiums received	78
Policy charges	(1)
Surrenders and withdrawals	(249)
Benefit payments	(4)
Net transfers from (to) separate account	43
Interest credited	58
Balance, end of the period	$ 6,544
Weighted-average crediting rate (years)	2.37%
Net amount at risk	$ 4
Cash surrender value	6,496
VUL | Protection Solutions
Policyholder Account Balance [Roll Forward]
Balance, beginning of period		655
Issuances		0
Premiums received		5
Policy charges		(9)
Surrenders and withdrawals		0
Benefit payments		(2)
Net transfers from (to) separate account		11
Interest credited		9
Other		0
Balance, end of the period		$ 669
Weighted-average crediting rate (years)		3.52%
Net amount at risk		$ 30,589
Cash surrender value		535
GMxB Core | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period		27
Issuances		0
Premiums received		29
Policy charges		(2)
Surrenders and withdrawals		0
Benefit payments		0
Net transfers from (to) separate account		(26)
Interest credited		0
Other		0
Balance, end of the period		$ 28
Weighted-average crediting rate (years)		1.00%
Net amount at risk		$ 9
Cash surrender value		32
IE | Individual Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period		7
Issuances		0
Premiums received		0
Policy charges		0
Surrenders and withdrawals		0
Benefit payments		0
Net transfers from (to) separate account		77
Interest credited		1
Other		0
Balance, end of the period		$ 85
Weighted-average crediting rate (years)		1.00%
Net amount at risk		$ 0
Cash surrender value		81
SCS
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	40,353
Balance, end of the period	44,594
SCS | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	40,353	242
Issuances	0	0
Premiums received	1	0
Policy charges	(3)	0
Surrenders and withdrawals	(777)	(1)
Benefit payments	(62)	0
Net transfers from (to) separate account	2,483	1,031
Interest credited	2,599	24
Other		0
Balance, end of the period	$ 44,594	$ 1,296
Weighted-average crediting rate (years)	0.00%	1.00%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 41,487	1,208
Reinsured | Group Retirement
Policyholder Account Balance [Roll Forward]
Balance, beginning of period		819
Issuances		0
Premiums received		6
Policy charges		(9)
Surrenders and withdrawals		(23)
Benefit payments		(2)
Net transfers from (to) separate account		0
Interest credited		8
Other		1
Balance, end of the period		$ 800
Weighted-average crediting rate (years)		4.12%
Net amount at risk		$ 4,011
Cash surrender value		$ 799