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Reinsurance - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Oct. 01, 2023 agreement
Ceded Credit Risk [Line Items] |  |  |  |
Maximum retention per single insured life on fixed and VUL insurance contracts | $ 20 |  |  |
Percent of mortality risk reinsured on newly issued non-term life insurance contracts | 25.00% |  |  |
Number of reinsurance agreements | agreement |  |  |  | 2
Investments | $ 129,254 | $ 124,331 |  |
Reinsurance recoverables, net of allowance for credit losses | 28,750 | 29,843 |  |
Reinsurance recoverable, allowance for credit loss | 100 | 81 |  |
Fortitude Re |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Deposits assets | 8,100 | 7,800 |  |
Investments | 9,300 | 9,900 |  |
Reserves associated with modified coinsurance reinsurance arrangements | 9,337 | 9,871 |  |
Resolution Life |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reinsurance recoverables, net of allowance for credit losses | 4,900 | 5,000 |  |
Reinsurance recoverable for paid and unpaid claims and claims adjustments | 3,800 | 3,800 |  |
Commonwealth |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Deposits assets | 9,500 | 6,200 |  |
Investments | 9,000 | 5,900 |  |
Protective |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reinsurance recoverables, net of allowance for credit losses | 8,400 | 9,100 |  |
Reinsurance recoverable for paid and unpaid claims and claims adjustments | 9,900 | 10,500 |  |
Athene Holding Ltd. |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reinsurance ACL and deposit assets | 2,100 | 2,700 |  |
Reserves associated with modified coinsurance reinsurance arrangements | 2,067 | 2,774 |  |
Letter of credit | 63 |  |  |
Amount of amortization, after-tax, of deferred gain on business sold | 26 | 33 | $ 25 |
Athene Holding Ltd. | Over-Collateralization |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reserves associated with modified coinsurance reinsurance arrangements | 61 |  |  |
Swiss Re |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reinsurance recoverables, net of allowance for credit losses | 1,300 | 1,600 |  |
Trust funded to support reinsurance receivable | 617 | 656 |  |
Fixed Annuities | Fortitude Re |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reinsurance recoverables | 10,600 | 10,500 |  |
Reinsurance recoverables on unpaid losses | 2,600 | 2,700 |  |
Reinsurance recoverable for unpaid claims and claims adjustments | 90 | 11 |  |
Deposits assets | $ 3,000 | $ 4,200 |  |

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