Statement Of Comprehensive Income [Abstract]
| Concept |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
465,700,000
GBP
|
–
GBP
|
465,700,000
GBP
|
482,400,000
GBP
|
–
GBP
|
–
GBP
|
482,400,000
GBP
|
–
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||
| Other comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
1,300,000
GBP
|
–
GBP
|
1,300,000
GBP
|
1,600,000
GBP
|
–
GBP
|
–
GBP
|
1,600,000
GBP
|
–
GBP
|
–
GBP
|
| Comprehensive income | — | — | — | — | — |
464,400,000
GBP
|
— | — | — |
480,800,000
GBP
|
— | — |