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] | ||||||
| Administrative expenses |
88,000,000
GBP
|
–
GBP
|
88,000,000
GBP
|
74,000,000
GBP
|
74,000,000
GBP
|
–
GBP
|
| Tax expense (income) |
4,000,000
GBP
|
2,000,000
GBP
|
2,000,000
GBP
|
30,000,000
GBP
|
26,000,000
GBP
|
4,000,000
GBP
|