Employee compensation and benefits - Key actuarial assumptions for the principal plan (Details) |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Disclosure of defined benefit plans [line items] | ||
| Inflation rate (CPI) | 2.34% | 2.88% |
| Pension Plan | Principal plan | ||
| Disclosure of defined benefit plans [line items] | ||
| Discount rate | 5.51% | 5.54% |
| Inflation rate (RPI) | 3.02% | 3.33% |
| Rate of increase for pensions | 2.96% | 3.22% |
| Rate of pay increase | 3.09% | 3.63% |
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- Definition Actuarial Assumption Of Expected Rates Of Inflation, Consumer Price Index No definition available.
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- Definition Actuarial Assumption Of Expected Rates Of Inflation, Retail Price Index No definition available.
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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The expected rate of increases in pension that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
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