Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|
| 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 |
–
GBP
|
5,300,000
GBP
|
5,300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Tax expense (income) |
294,400,000
GBP
|
66,900,000
GBP
|
361,300,000
GBP
|
–
GBP
|
55,000,000
GBP
|
55,000,000
GBP
|