Statement Of Comprehensive Income [Abstract]
| Concept |
2022-09-01 to 2023-09-03 |
2022-09-01 to 2023-09-03 |
2022-09-01 to 2023-09-03 |
2022-09-01 to 2023-09-03 |
2022-09-01 to 2023-09-03 |
2022-09-01 to 2023-09-03 |
2022-09-01 to 2023-09-03 |
2021-09-01 to 2022-08-31 |
2021-09-01 to 2022-08-31 |
2021-09-01 to 2022-08-31 |
2021-09-01 to 2022-08-31 |
2021-09-01 to 2022-08-31 |
2021-09-01 to 2022-08-31 |
2021-09-01 to 2022-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
2 2 3 .1
GBP
|
–
GBP
|
–
GBP
|
2 2 3 .1
GBP
|
17 0 . 2
GBP
|
52 . 9
GBP
|
–
GBP
|
–
GBP
|
30,800,000
GBP
|
–
GBP
|
–
GBP
|
4 7 .5
GBP
|
16 .7
GBP
|
30,800,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
0 .3
GBP
|
— | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — |
| Cash flow hedges [abstract] | ||||||||||||||
| Reclassification adjustments on cash flow hedges, before tax |
1,700,000
GBP
|
— | — | — | — | — | — | — |
15 .6
GBP
|
— | — | — | — | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss |
9,700,000
GBP
|
— | — | — | — | — | — | — |
13 . 4
GBP
|
— | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss |
7 .7
GBP
|
— | — | — | — | — | — | — |
9,500,000
GBP
|
— | — | — | — | — |
| Other comprehensive income |
26 . 2
GBP
|
2 6 . 2
GBP
|
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
6 .1
GBP
|
–
GBP
|
6 .1
GBP
|
— | — |
–
GBP
|
| Comprehensive income |
249,300,000
GBP
|
2 6 . 2
GBP
|
–
GBP
|
2 2 3 .1
GBP
|
— | — |
–
GBP
|
–
GBP
|
24 .7
GBP
|
–
GBP
|
6 .1
GBP
|
— | — |
30,800,000
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent |
249,300,000
GBP
|
— | — | — | — | — | — | — |
2 4 .7
GBP
|
— | — | — | — | — |