Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|
| 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] | ||||||
| Other income |
4,600,000
GBP
|
116 .7
GBP
|
1 21 .3
GBP
|
1, 015. 0
GBP
|
8 9.1
GBP
|
1 ,10 4. 1
GBP
|
| Tax expense (income) |
91 .7
GBP
|
519,000,000
GBP
|
610,700,000
GBP
|
35 5. 5
GBP
|
4 65.5
GBP
|
1 10. 0
GBP
|