Statement Of Changes In Equity [Abstract]
| Concept |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2022-06-01 to 2023-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Decrease (increase) through tax on share-based payment transactions, equity |
—
GBP
|
—
GBP
|
0 .1
GBP
|
—
GBP
|
—
GBP
|
0 .1
GBP
|
—
GBP
|
0. 3
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
300,000
GBP
|
| Increase (decrease) through transactions with owners, equity |
—
GBP
|
0 .1
GBP
|
12 .9
GBP
|
—
GBP
|
—
GBP
|
12 . 8
GBP
|
—
GBP
|
10,700,000
GBP
|
800,000
GBP
|
900,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
12 .4
GBP
|