Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
|---|---|---|---|---|---|---|
| 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] | ||||||
| Tax expense (income) |
26,200,000
GBP
|
26,000,000
GBP
|
200,000
GBP
|
42,800,000
GBP
|
27,700,000
GBP
|
15,100,000
GBP
|