Derivative Instruments - Schedule of Collateral Amounts With Rights to Reclaim or Obligation to Return Cash (Details) - USD ($) $ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Credit Derivatives [Line Items] | ||
| Collateral Posted by Counterparty | $ 7,182 | $ 5,229 |
| Collateral Posted to Counterparty | (110) | (188) |
| AA- | ||
| Credit Derivatives [Line Items] | ||
| Collateral Posted by Counterparty | 4,043 | 2,378 |
| Collateral Posted to Counterparty | (21) | (63) |
| A+ | ||
| Credit Derivatives [Line Items] | ||
| Collateral Posted by Counterparty | 2,460 | 2,496 |
| Collateral Posted to Counterparty | (89) | (125) |
| A | ||
| Credit Derivatives [Line Items] | ||
| Collateral Posted by Counterparty | 47 | 82 |
| Collateral Posted to Counterparty | 0 | 0 |
| A- | ||
| Credit Derivatives [Line Items] | ||
| Collateral Posted by Counterparty | 632 | 273 |
| Collateral Posted to Counterparty | $ 0 | $ 0 |