Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|
| Statement of changes in net assets available for benefits [abstract] | ||
| Reconciliation of changes in net assets available for benefits [abstract] | ||
| Changes in net assets available for benefits [abstract] | ||
| Investment income |
52,700,000
GBP
|
71 .7
GBP
|
| Tax expense (income) |
16,900,000
GBP
|
16,900,000
GBP
|