Statement Of Changes In Equity [Abstract]
| Concept |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
2023-08-01 to 2024-07-31 |
As at 2024-07-31 |
2023-08-01 to 2024-07-31 |
As at 2024-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
As at 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
2022-08-01 to 2023-07-31 |
2022-08-01 to 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||
| Equity | — | — | — | — |
183,200,000
GBP
|
20,600,000
GBP
|
14,800,000
GBP
|
3,245,300,000
GBP
|
— |
3,465,400,000
GBP
|
— |
1,500,000
GBP
|
182,000,000
GBP
|
— |
15,000,000
GBP
|
20,400,000
GBP
|
3,242,700,000
GBP
|
— | — | — | — |
3,461,600,000
GBP
|
— |
1,500,000
GBP
|
182,000,000
GBP
|
15,400,000
GBP
|
20,000,000
GBP
|
3,367,800,000
GBP
|
3,148,900,000
GBP
|
1,500,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
130,500,000
GBP
|
— | — | — | — |
130,500,000
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
365,000,000
GBP
|
–
GBP
|
365,000,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — |
| Other comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
1,100,000
GBP
|
— | — | — | — |
1,100,000
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
3,500,000
GBP
|
–
GBP
|
3,500,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
129,400,000
GBP
|
— | — | — | — |
129,400,000
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
361,500,000
GBP
|
–
GBP
|
361,500,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — |
| Issue of equity |
–
GBP
|
1,200,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — |
1,200,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
–
GBP
|
–
GBP
|
–
GBP
|
131,700,000
GBP
|
— | — | — | — |
131,700,000
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
171,700,000
GBP
|
–
GBP
|
171,700,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
–
GBP
|
–
GBP
|
–
GBP
|
5,300,000
GBP
|
— | — | — | — |
5,300,000
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
4,500,000
GBP
|
–
GBP
|
4,500,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — |