Statement Of Changes In Equity [Abstract]
| Concept |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||
| Increase (decrease) through exercise of options, equity |
–
GBP
|
4,900,000
GBP
|
4,900,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,900,000
GBP
|
10,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
10,000,000
GBP
|
–
GBP
|
10,000,000
GBP
|
–
GBP
|
–
GBP
|
| Decrease (increase) through tax on share-based payment transactions, equity |
–
GBP
|
–
GBP
|
1,100,000
GBP
|
–
GBP
|
1,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,100,000
GBP
|
1,400,000
GBP
|
–
GBP
|
–
GBP
|
1,400,000
GBP
|
–
GBP
|
–
GBP
|
1,400,000
GBP
|
–
GBP
|
–
GBP
|
| Purchase of treasury shares |
–
GBP
|
9,500,000
GBP
|
9,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
9,500,000
GBP
|
12,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
12,100,000
GBP
|
–
GBP
|
12,100,000
GBP
|
–
GBP
|
–
GBP
|