Long-duration Contracts - Schedule of Rollforward of Policyholder Account Balance (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Policyholder Account Balance [Roll Forward]
Beginning balance	$ 308,894	$ 247,320
Deposits	19,811	25,504
Policy charges	(210)	(186)
Surrenders and withdrawals	(5,298)	(4,148)
Benefit payments	(4,733)	(3,587)
Interest credited	3,254	2,531
Foreign exchange	(297)	694
Other	(160)	135
Ending balance	321,261	268,263
Traditional Deferred Annuities
Policyholder Account Balance [Roll Forward]
Beginning balance	109,201	86,661
Deposits	7,122	10,515
Policy charges	0	0
Surrenders and withdrawals	(2,407)	(1,305)
Benefit payments	(362)	(342)
Interest credited	1,264	993
Foreign exchange	(55)	175
Other	0	0
Ending balance	$ 114,763	$ 96,697
Weighted average crediting rate	4.70%	4.60%
Net amount at risk	$ 423	$ 421
Cash surrender value	107,870	90,843
Indexed Annuities
Policyholder Account Balance [Roll Forward]
Beginning balance	105,317	97,861
Deposits	3,430	4,127
Policy charges	(210)	(186)
Surrenders and withdrawals	(2,818)	(2,824)
Benefit payments	(415)	(391)
Interest credited	1,031	840
Foreign exchange	1	2
Other	0	0
Ending balance	$ 106,336	$ 99,429
Weighted average crediting rate	2.80%	2.60%
Net amount at risk	$ 17,214	$ 15,599
Cash surrender value	97,474	90,820
Funding Agreements
Policyholder Account Balance [Roll Forward]
Beginning balance	85,555	54,768
Deposits	8,531	10,744
Policy charges	0	0
Surrenders and withdrawals	(47)	0
Benefit payments	(3,892)	(2,768)
Interest credited	899	644
Foreign exchange	(187)	287
Other	(122)	144
Ending balance	$ 90,737	$ 63,819
Weighted average crediting rate	4.50%	4.60%
Net amount at risk	$ 0	$ 0
Cash surrender value	0	0
Other investment-type
Policyholder Account Balance [Roll Forward]
Beginning balance	8,821	8,030
Deposits	728	118
Policy charges	0	0
Surrenders and withdrawals	(26)	(19)
Benefit payments	(64)	(86)
Interest credited	60	54
Foreign exchange	(56)	230
Other	(38)	(9)
Ending balance	$ 9,425	$ 8,318
Weighted average crediting rate	3.00%	2.70%
Net amount at risk	$ 17	$ 45
Cash surrender value	$ 6,627	$ 6,907

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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 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 guaranteed benefit in excess of current account balance of policyholder account balance.

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

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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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- Definition

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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