Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [abstract] | |||||||||||||||
| Disclosure of fair value measurement of equity [line items] | |||||||||||||||
| Equity |
86 6 .7
GBP
|
4 66.8
GBP
|
4,200,000
GBP
|
7 3 .1
GBP
|
322 .6
GBP
|
2 4 5 .7
GBP
|
1, 0 14 . 9
GBP
|
82,400,000
GBP
|
683,300,000
GBP
|
3,500,000
GBP
|
1, 0 3 4 . 0
GBP
|
3,500,000
GBP
|
2 4 5.7
GBP
|
70,800,000
GBP
|
714 . 0
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |