Statement Of Changes In Equity [Abstract]
| Concept |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through transactions with owners, equity |
41,400,000
GBP
|
97,200,000
GBP
|
55,300,000
GBP
|
400,000
GBP
|
100,000
GBP
|
–
GBP
|
3,700,000
GBP
|
–
GBP
|
–
GBP
|
4,400,000
GBP
|
–
GBP
|
700,000
GBP
|
| Purchase of treasury shares | — | — | — | — | — | — |
600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
600,000
GBP
|
| Sale or issue of treasury shares |
–
GBP
|
100,000
GBP
|
–
GBP
|
–
GBP
|
100,000
GBP
|
–
GBP
|
— | — | — | — | — | — |