Retirement benefit obligations - Schedule of Principal Actuarial and Financial Assumptions Used in Valuation of Defined Benefit Pension Schemes (Details) |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Principal Actuarial and Financial Assumptions Used in Valuation of Defined Benefit Pension Schemes [Line Items] | ||
| Discount rates (in percent) | 5.57% | 5.55% |
| Rate of inflation: | ||
| Rate of salary increases (in percent) | 0.00% | 0.00% |
| Weighted-average rate of increase for pensions in payment (in percent) | 2.52% | 2.69% |
| Retail Price Index (RPI) | ||
| Rate of inflation: | ||
| Price Index (in percent) | 2.65% | 2.97% |
| Consumer Price Index (CPI) | ||
| Rate of inflation: | ||
| Price Index (in percent) | 2.13% | 2.52% |