Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
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As at 2020-12-31 |
As at 2020-12-31 |
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| Disclosure of fair value measurement [text block] | — |
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| 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 |
1,3 24. 2
GBP
|
— |
7 4 7. 7
GBP
|
13 . 4
GBP
|
43 3. 3
GBP
|
193 . 8
GBP
|
4 7. 9
GBP
|
4 0 .1
GBP
|
15 2 . 0
GBP
|
19 8 . 3
GBP
|
78 .5
GBP
|
706. 0
GBP
|
1, 3 0 6 . 8
GBP
|
1 7 7. 4
GBP
|
21. 5
GBP
|
43 2. 2
GBP
|
4 7. 7
GBP
|
15 3. 4
GBP
|
–
GBP
|
8 7. 2
GBP
|
4 7. 5
GBP
|
6 9 7. 3
GBP
|
4 30.0
GBP
|
76. 0
GBP
|
1,3 39. 4
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |