Separate Account Liabilities Rollforward (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jan. 01, 2025
Separate Account, Liability [Roll Forward]
Balance, beginning of period	$ 73,511
Separate account liabilities	73,224
Balance, end of period	73,224
Stable Value and Risk Solutions
Separate Account, Liability [Roll Forward]
Balance, beginning of period	27,605
Separate account liabilities	27,134	$ 28,911
Premiums and deposits	737	1,076
Policy charges	(102)	(100)
Surrenders and withdrawals	(1,172)	(3,221)
Benefit payments	(75)	(70)
Investment performance	569	1,159
Net transfers from (to) general account	9	30
Other	(437)	(2,724)
Balance, end of period	27,134	28,911
Cash Surrender Value	24,830	26,955
Stable Value and Risk Solutions \| Previously Reported
Separate Account, Liability [Roll Forward]
Balance, beginning of period		32,761
Separate account liabilities
Stable Value and Risk Solutions \| Reclassification, Segmentation Basis Change
Separate Account, Liability [Roll Forward]
Separate account liabilities			$ 0
Group annuities
Separate Account, Liability [Roll Forward]
Balance, beginning of period	18,099
Separate account liabilities	18,169	17,838
Premiums and deposits	135	103
Policy charges	(54)	(51)
Surrenders and withdrawals	(868)	(787)
Benefit payments	(22)	(20)
Investment performance	764	879
Net transfers from (to) general account	(10)	(62)
Other	125	(151)
Balance, end of period	18,169	17,838
Cash Surrender Value	7,139	6,938
Group annuities \| Previously Reported
Separate Account, Liability [Roll Forward]
Balance, beginning of period		11,001
Separate account liabilities
Group annuities \| Reclassification, Segmentation Basis Change
Separate Account, Liability [Roll Forward]
Separate account liabilities			6,926
Variable Annuity
Separate Account, Liability [Roll Forward]
Balance, beginning of period	19,554
Separate account liabilities	19,190	20,253
Premiums and deposits	34	35
Policy charges	(214)	(230)
Surrenders and withdrawals	(1,225)	(1,254)
Benefit payments	(225)	(208)
Investment performance	1,326	1,078
Net transfers from (to) general account	(58)	(71)
Other	(2)	63
Balance, end of period	19,190	20,253
Cash Surrender Value	$ 19,082	20,064
Variable Annuity \| Previously Reported
Separate Account, Liability [Roll Forward]
Balance, beginning of period		$ 27,766
Separate account liabilities
Variable Annuity \| Reclassification, Segmentation Basis Change
Separate Account, Liability [Roll Forward]
Separate account liabilities			$ (6,926)

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

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- Definition

Amount of separate account liability payable to policyholder upon surrender of contract before maturity.

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Amount of increase (decrease) in separate account liability from performance of investment.

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Amount increase (decrease) in separate account liability from change, classified as other.

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Amount of decrease in separate account liability from policy charge.

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Amount of cash inflow to separate account liability from premium and deposit from cash 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 separate account liability from contract redemption and withdrawal of funds.

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Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account.

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Amount of transfer to (from) liability for policyholder account balance (to) from liability for separate account.

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