Offsetting financial liabilities (Detail) - USD ($) $ in Billions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Derivative financial instruments | ||
| Disclosure Of Offsetting Of Financial Liabilities [Line Items] | ||
| Liabilities based on IFRS netting | $ 199.3 | $ 156.2 |
| Further netting potential not recognized on the balance sheet | (180.3) | (139.3) |
| of which: netting of recognized financial assets | (142.0) | (110.3) |
| of which: netting with collateral pledged | (38.3) | (29.0) |
| Liabilities, after consideration of further netting potential | 19.0 | 17.0 |
| Cash collateral payables on derivative instruments | ||
| Disclosure Of Offsetting Of Financial Liabilities [Line Items] | ||
| Liabilities based on IFRS netting | 37.3 | 34.2 |
| Further netting potential not recognized on the balance sheet | (18.8) | (17.0) |
| of which: netting of recognized financial assets | (17.0) | (15.3) |
| of which: netting with collateral pledged | (1.8) | (1.7) |
| Liabilities, after consideration of further netting potential | $ 18.5 | $ 17.2 |