Fair Value Hierarchy - Derivatives, Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Derivative [Line Items] | ||
| Net realized and unrealized gains (losses) on level 3 derivatives | $ (1,700) | $ 104 |
| Net realized gains (losses) on derivative assets and liabilities | (467) | (129) |
| Net unrealized gains/(losses) | (1,231) | 25 |
| Market making | ||
| Derivative [Line Items] | ||
| Net realized and unrealized gains (losses) on level 3 derivatives | (1,650) | (115) |
| Other principal transactions | ||
| Derivative [Line Items] | ||
| Net realized and unrealized gains (losses) on level 3 derivatives | $ (49) | $ 11 |