Disclosure Of Fair Value Measurement [Text Block]
| Concept |
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 |
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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 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
As at 2020-08-31 |
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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 |
2 4 5 .7
GBP
|
6 81. 2
GBP
|
5 8.9
GBP
|
2 .1
GBP
|
26. 2
GBP
|
1 , 0 14 . 9
GBP
|
2 .7
GBP
|
3,500,000
GBP
|
14 . 3
GBP
|
2 . 4
GBP
|
58,900,000
GBP
|
1, 0 3 4 .0
GBP
|
3,500,000
GBP
|
2 4 5 .7
GBP
|
2 .1
GBP
|
7 11 . 9
GBP
|
2,000,000
GBP
|
810 . 3
GBP
|
1 5.8
GBP
|
–
GBP
|
5 7 7. 0
GBP
|
2 .1
GBP
|
3,500,000
GBP
|
2 4 5 .7
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |