Derivative Financial Instruments - Schedule of Fair Value of Instruments with Credit-Risk-Contingent Features (Details) - USD ($) |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Gross liability fair value of contracts containing credit-risk-contingent features | $ 6,000,000 | $ 16,000,000 |
| Gross asset fair value of contracts containing credit-risk-contingent features and subject to MNAs | (6,000,000) | (2,000,000) |
| Collateral posted under MNAs for contracts containing credit-risk-contingent features | 0 | (14,000,000) |
| Maximum amount of additional exposure for contracts with credit-risk-contingent features if all features were triggered concurrently | $ 0 | $ 0 |