Derivative Instruments and Hedging Activities - Fair Value Asset/(Liability) of Credit Protection Sold (Details) - Credit Protection Sold - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Credit Derivatives | ||
| Fair Value Asset (Liability) | $ 5,580 | $ 5,245 |
| CDS | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 5,458 | 5,099 |
| Single-name CDS | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 3,346 | 3,171 |
| Single-name CDS | Investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 2,657 | 2,394 |
| Single-name CDS | Non-investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 689 | 777 |
| Index and basket CDS | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 2,112 | 1,928 |
| Index and basket CDS | Investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 1,140 | 907 |
| Index and basket CDS | Non-investment grade | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | 972 | 1,021 |
| Other credit contracts | ||
| Credit Derivatives | ||
| Fair Value Asset (Liability) | $ 122 | $ 146 |