Statement Of Changes In Equity [Abstract]
| Concept |
2021-06-01 to 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
As at 2022-05-31 |
2021-06-01 to 2022-05-31 |
As at 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2021-06-01 to 2022-05-31 |
2020-06-01 to 2021-05-31 |
2020-06-01 to 2021-05-31 |
2020-06-01 to 2021-05-31 |
2020-06-01 to 2021-05-31 |
2020-06-01 to 2021-05-31 |
2020-06-01 to 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
As at 2021-05-31 |
2020-06-01 to 2021-05-31 |
As at 2021-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
As at 2020-05-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity | — |
59 0.0
GBP
|
117. 6
GBP
|
— | — |
–
GBP
|
12 5 . 8
GBP
|
8. 4
GBP
|
1 , 1 86.0
GBP
|
— |
2 , 0 2 7. 8
GBP
|
— | — | — | — | — | — | — | — | — |
53,200,000
GBP
|
–
GBP
|
1 , 1 33.3
GBP
|
125 . 8
GBP
|
81. 0
GBP
|
12 . 8
GBP
|
— |
860,500,000
GBP
|
12 5 . 8
GBP
|
–
GBP
|
81 . 0
GBP
|
74 .1
GBP
|
6 41 . 7
GBP
|
935 . 9
GBP
|
1 3.3
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) |
503,900,000
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — | — | — |
–
GBP
|
— |
–
GBP
|
503,900,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3 71. 9
GBP
|
371. 9
GBP
|
— | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
60,400,000
GBP
|
— | — |
–
GBP
|
64,400,000
GBP
|
— | — | — | — |
–
GBP
|
— |
4 . 0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
20. 9
GBP
|
–
GBP
|
–
GBP
|
22 . 2
GBP
|
–
GBP
|
— | — | — | — | — | — |
1 . 3
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
564 .3
GBP
|
— | — |
–
GBP
|
64,400,000
GBP
|
— | — | — | — |
–
GBP
|
— |
4 . 0
GBP
|
503,900,000
GBP
|
–
GBP
|
–
GBP
|
20. 9
GBP
|
–
GBP
|
–
GBP
|
3 49.7
GBP
|
3 71. 9
GBP
|
— | — | — | — | — | — |
1. 3
GBP
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
186 . 2
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — | — | — |
–
GBP
|
— |
–
GBP
|
186 . 2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
15 9 . 7
GBP
|
15 9 . 7
GBP
|
— | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
13 . 6
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — | — | — |
–
GBP
|
— |
13 . 6
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
7. 4
GBP
|
–
GBP
|
— | — | — | — | — | — |
7. 4
GBP
|
— | — | — | — | — | — | — | — |