Statement Of Changes In Equity [Abstract]
| Concept |
2023-05-01 to 2024-04-28 |
2023-05-01 to 2024-04-28 |
2023-05-01 to 2024-04-28 |
2023-05-01 to 2024-04-28 |
2023-05-01 to 2024-04-28 |
2023-05-01 to 2024-04-28 |
2023-05-01 to 2024-04-28 |
2022-05-02 to 2023-04-30 |
2022-05-02 to 2023-04-30 |
2022-05-02 to 2023-04-30 |
2022-05-02 to 2023-04-30 |
2022-05-02 to 2023-04-30 |
2022-05-02 to 2023-04-30 |
2022-05-02 to 2023-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Decrease (increase) through tax on share-based payment transactions, equity |
–
GBP
|
1,100,000
GBP
|
–
GBP
|
1,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
500,000
GBP
|
–
GBP
|
–
GBP
|
500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Increase (decrease) through transactions with owners, equity |
–
GBP
|
6,300,000
GBP
|
–
GBP
|
1,300,000
GBP
|
–
GBP
|
–
GBP
|
5,000,000
GBP
|
11,000,000
GBP
|
–
GBP
|
–
GBP
|
700,000
GBP
|
11,700,000
GBP
|
–
GBP
|
–
GBP
|
| Purchase of treasury shares |
–
GBP
|
7,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
7,200,000
GBP
|
14,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
14,500,000
GBP
|
–
GBP
|
–
GBP
|