Derivative Instruments and Hedging Activities - Fair Value Asset/(Liability) of Credit Protection Sold (Details) - Credit Protection Sold - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Credit Derivatives | ||
| Fair Value Asset (Liability) | $ 5,245 | $ 3,896 |
| CDS | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 5,099 | 3,763 |
| Single-name CDS | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 3,171 | 2,475 |
| Single-name CDS | Investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 2,394 | 1,890 |
| Single-name CDS | Non-investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 777 | 585 |
| Index and basket CDS | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 1,928 | 1,288 |
| Index and basket CDS | Investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 907 | 799 |
| Index and basket CDS | Non-investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 1,021 | 489 |
| Other credit contracts | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | $ 146 | $ 133 |