Derivative Instruments and Hedging Activities, Net Gains (Losses) from Derivative Valuation Adjustments (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| CVA | $ (62) | $ (23) |
| DVA | 79 | (18) |
| FVA | (9) | (21) |
| Total | $ 8 | $ (62) |