Other operating expenses - Summary of Cumulative Number of Shares Allocated (Parenthetical) (Detail) - Long Term Incentive And Variable Compensation Identified Staff Performance Year Two Thousand And Twenty Four [Member] |
12 Months Ended |
|---|---|
|
Dec. 31, 2025
shares
| |
| Disclosure of terms and conditions of share-based payment arrangement [line items] | |
| Number Of Shares Remain Conditionally Granted | 795,239 |
| Number of shares allocated | 1,511,212 |