POLICYHOLDERS' ACCOUNT BALANCES - Schedule of Policyholder Account Balance (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	$ 24,431	$ 19,744
Acquisition from business combination	61,296
Issuances	4,100	2,776
Derecognition	(7,402)
Premiums received	282	1,316
Policy charges	(330)	(221)
Surrenders and withdrawals	(3,366)	(1,365)
Interest credited	856	262
Benefit payments	(177)	(19)
Other	(195)	104
Balance, end of period	80,489
Net amount at risk	12,051	806
Annuity
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	22,456	17,845
Acquisition from business combination	61,296
Issuances	4,064	2,731
Derecognition	(7,402)
Premiums received	69	1,118
Policy charges	(143)	(34)
Surrenders and withdrawals	(3,323)	(1,297)
Interest credited	808	173
Benefit payments	(177)	(19)
Other	(195)	104
Balance, end of period	$ 77,453	$ 20,621
Weighted-average crediting rate	3.00%	2.00%
Net amount at risk	$ 12,466	$ 1,161
Cash surrender value	71,450	18,648
Life
Policyholder Account Balance [Roll Forward]
Balance, beginning of period	1,975	1,899
Acquisition from business combination	0
Issuances	36	45
Derecognition	0
Premiums received	213	198
Policy charges	(187)	(187)
Surrenders and withdrawals	(43)	(68)
Interest credited	48	89
Benefit payments	0	0
Other	0	0
Balance, end of period	$ 2,042	$ 1,976
Weighted-average crediting rate	5.00%	9.00%
Net amount at risk	$ 38,365	$ 37,023
Cash surrender value	$ 1,796	$ 1,724

Policyholder Account Balance, Business Combination

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Policyholder Account Balance, Derecognition

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Policyholder Account Balance, Excluding Embedded Derivatives

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Amount of cash to be paid to policyholder upon termination and surrender of long-duration contract issued by insurance entity.

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Amount of interest expense for allocation to policyholder account balance.

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Amount of guaranteed benefit in excess of current account balance of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of cash outflow to policyholder account balance from benefit payment.

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Amount of increase (decrease) in liability for policyholder account balance from change, classified as other.

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Amount of increase in liability for policyholder account balance from contract issuance.

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Amount of decrease in liability for policyholder account balance from policy charge.

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Amount of cash inflow to policyholder account balance from premium received.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of decrease in liability for policyholder account balance from contract redemption and withdrawal of funds.

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Weighted-average crediting rate for liability for policyholder account balance, calculated at a point in time.

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Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense.

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