Offsetting financial assets (Detail) - USD ($) $ in Billions |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Derivative financial instruments | |||
| Disclosure Of Offsetting Of Financial Assets [Line Items] | |||
| Assets based on IFRS netting | $ 170.0 | $ 138.0 | $ 185.6 |
| Further netting potential not recognized on the balance sheet | (152.9) | (122.6) | (161.7) |
| of which: netting of recognized financial liabilities | (130.4) | (100.8) | (135.5) |
| of which: netting with collateral received | (22.5) | (21.8) | (26.2) |
| Assets, after consideration of further netting potential | 17.1 | 15.5 | 23.9 |
| Cash collateral receivables on derivative instruments | |||
| Disclosure Of Offsetting Of Financial Assets [Line Items] | |||
| Assets based on IFRS netting | 45.5 | 39.0 | 44.0 |
| Further netting potential not recognized on the balance sheet | (29.2) | (24.3) | (28.3) |
| of which: netting of recognized financial liabilities | (27.3) | (22.2) | (25.9) |
| of which: netting with collateral received | (2.0) | (2.1) | (2.4) |
| Assets, after consideration of further netting potential | $ 16.2 | $ 14.7 | $ 15.7 |