SEGMENT INFORMATION - Schedule of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
REVENUES
Premiums	$ 8		$ 7		$ 18	$ 14
Policy charges and fee income	113		115		225	232
Net investment income	75		78		145	154
Asset management and service fees	23		23		46	45
Other income			3		2	4
Investment losses, net	(147)		(287)		(468)	(122)
TOTAL REVENUES	72		(61)		(32)	327
BENEFITS AND EXPENSES
Policyholder benefits and changes in fair value of insurance liabilities	62		(255)		(252)	85
Commission expense	23		23		46	46
General, administrative and other expenses	20		16		38	34
TOTAL BENEFITS AND EXPENSES	105		(216)		(168)	165
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES	(33)		155		136	162
Less: Income tax expense (benefit)	(3)		25		21	25
NET INCOME (LOSS)	(30)		130		115	137
Other comprehensive income (loss), before tax:
Changes in own-credit risk related to insurance liabilities	61		(115)		48	(93)
Less: Income tax benefit	13		(25)		10	(20)
Other comprehensive income (loss), net of tax	48	$ (10)	(90)	$ 17	38	(73)
COMPREHENSIVE INCOME	18		40		153	64
Retained Business
REVENUES
Premiums	8		7		18	14
Policy charges and fee income	113		115		225	232
Net investment income	59		58		115	114
Asset management and service fees	23		23		46	45
Other income			2		2	3
Investment losses, net	(179)		(402)		(604)	(372)
TOTAL REVENUES	24		(197)		(198)	36
BENEFITS AND EXPENSES
Policyholder benefits and changes in fair value of insurance liabilities	14		(391)		(418)	(206)
Commission expense	23		23		46	46
General, administrative and other expenses	20		16		38	34
TOTAL BENEFITS AND EXPENSES	57		(352)		(334)	(126)
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES	(33)		155		136	162
Less: Income tax expense (benefit)	(3)		25		21	25
NET INCOME (LOSS)	(30)		130		115	137
Other comprehensive income (loss), before tax:
Changes in own-credit risk related to insurance liabilities	61		(115)		48	(93)
Less: Income tax benefit	13		(25)		10	(20)
Other comprehensive income (loss), net of tax	48		(90)		38	(73)
COMPREHENSIVE INCOME	18		40		153	64
Ceded Business
REVENUES
Premiums	0		0		0	0
Policy charges and fee income	0		0		0	0
Net investment income	16		20		30	40
Asset management and service fees	0		0		0	0
Other income			1		0	1
Investment losses, net	32		115		136	250
TOTAL REVENUES	48		136		166	291
BENEFITS AND EXPENSES
Policyholder benefits and changes in fair value of insurance liabilities	48		136		166	291
Commission expense	0		0		0	0
General, administrative and other expenses	0		0		0	0
TOTAL BENEFITS AND EXPENSES	48		136		166	291
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES	0		0		0	0
Less: Income tax expense (benefit)	0		0		0	0
NET INCOME (LOSS)	0		0		0	0
Other comprehensive income (loss), before tax:
Changes in own-credit risk related to insurance liabilities	0		0		0	0
Less: Income tax benefit	0		0		0	0
Other comprehensive income (loss), net of tax	0		0		0	0
COMPREHENSIVE INCOME	$ 0		$ 0		$ 0	$ 0