Assets pledged, collateral received and assets transferred - Transferred financial assets not qualifying for full derecognition and associated financial liabilities (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Repurchase agreements | ||
| Disclosure of transferred financial assets that are not derecognised in their entirety [line items] | ||
| Carrying amount of transferred assets | $ 109,524 | $ 83,585 |
| Carrying amount of associated liabilities | 96,980 | 75,625 |
| Securities lending agreements | ||
| Disclosure of transferred financial assets that are not derecognised in their entirety [line items] | ||
| Carrying amount of transferred assets | 62,679 | 58,232 |
| Carrying amount of associated liabilities | $ 2,005 | $ 4,361 |