Offsetting financial assets (Detail) - USD ($) $ in Billions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Derivative financial instruments | ||
| Disclosure Of Offsetting Of Financial Assets [Line Items] | ||
| Assets based on IFRS netting | $ 193.2 | $ 147.8 |
| Further netting potential not recognized on the balance sheet | (168.8) | (132.2) |
| of which: netting of recognized financial liabilities | (142.0) | (110.3) |
| of which: netting with collateral received | (26.7) | (21.9) |
| Assets, after consideration of further netting potential | 24.4 | 15.6 |
| Cash collateral receivables on derivative instruments | ||
| Disclosure Of Offsetting Of Financial Assets [Line Items] | ||
| Assets based on IFRS netting | 51.3 | 41.6 |
| Further netting potential not recognized on the balance sheet | (31.5) | (25.8) |
| of which: netting of recognized financial liabilities | (29.7) | (24.1) |
| of which: netting with collateral received | (1.8) | (1.7) |
| Assets, after consideration of further netting potential | $ 19.8 | $ 15.7 |