Derivative Instruments - Schedule of Derivatives Reported in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] | ||||
| Beginning balance | $ 180 | $ 535 | $ 187 | $ 492 |
| Current period increases (decreases) in fair value | 13 | (124) | 36 | (50) |
| Reclassification to net (income) loss | (31) | (31) | (61) | (62) |
| Ending balance | 162 | 380 | 162 | 380 |
| Current period increases (decreases) in fair value, deferred taxes | (3) | 34 | (9) | 13 |
| Reclassification to net (income), deferred taxes | $ 17 | $ 16 | $ 33 | $ 34 |