Statement Of Changes In Equity [Abstract]
| Concept |
2021-04-04 to 2022-04-02 |
2021-04-04 to 2022-04-02 |
2021-04-04 to 2022-04-02 |
2021-04-04 to 2022-04-02 |
2021-04-04 to 2022-04-02 |
2021-04-04 to 2022-04-02 |
2020-03-29 to 2021-04-03 |
2020-03-29 to 2021-04-03 |
2020-03-29 to 2021-04-03 |
2020-03-29 to 2021-04-03 |
2020-03-29 to 2021-04-03 |
2020-03-29 to 2021-04-03 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Decrease (increase) through tax on share-based payment transactions, equity |
500,000
GBP
|
–
GBP
|
–
GBP
|
500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2,200,000
GBP
|
–
GBP
|
2,200,000
GBP
|
–
GBP
|
| Purchase of treasury shares |
400,000
GBP
|
–
GBP
|
–
GBP
|
400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
| Reduction of issued capital | — | — |
1,409,800,000
GBP
|
— | — | — | — | — |
1,409,800,000
GBP
|
1,409,800,000
GBP
|
–
GBP
|
— |