Retirement benefit obligations - Schedule of Analysis of Defined Benefit Obligations (Details) - GBP (£) £ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Analysis of the defined benefit obligation | ||
| Defined benefit obligation | £ (26,571) | £ (27,118) |
| Active members | ||
| Analysis of the defined benefit obligation | ||
| Defined benefit obligation | (1,960) | (2,463) |
| Deferred members | ||
| Analysis of the defined benefit obligation | ||
| Defined benefit obligation | (6,722) | (7,080) |
| Dependants | ||
| Analysis of the defined benefit obligation | ||
| Defined benefit obligation | (1,486) | (1,429) |
| Pensioners | ||
| Analysis of the defined benefit obligation | ||
| Defined benefit obligation | £ (16,403) | £ (16,146) |