Derivative Instruments - Narrative (Details) - USD ($) $ in Millions |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Derivative [Line Items] | |||
| Derivative assets by counterparty | $ 30 | $ 151 | |
| Derivative assets, held collateral | 55 | 130 | |
| Derivative liabilities by counterparty | 571 | 237 | |
| Derivative liabilities, held collateral | 631 | 295 | |
| Derivative disbursement obligation | 25 | 0 | |
| Derivative claim | 59 | 79 | |
| Derivative asset, pledged collateral | 2,083 | 1,403 | |
| Derivative instrument, deferred option premiums | 365 | $ 52 | |
| Embedded derivatives | |||
| Derivative [Line Items] | |||
| Net fair value, derivative asset (liability) | (9,245) | (6,906) | |
| Derivatives related to funds withheld under reinsurance treaties | |||
| Derivative [Line Items] | |||
| Net fair value, derivative asset (liability) | 1,657 | 1,748 | |
| Derivatives related to funds withheld under reinsurance treaties | Funds withheld embedded derivative | |||
| Derivative [Line Items] | |||
| Net fair value, derivative asset (liability) | $ 1,651 | $ 1,752 | |