Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-12-31 |
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As at 2022-12-31 |
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As at 2021-12-31 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [abstract] | |||||||||||||||
| Disclosure of fair value measurement of assets [line items] | |||||||||||||||
| Assets | — | — | — |
1, 150.3
GBP
|
— |
1,1 4 6 . 5
GBP
|
— | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | |||||||||||||||
| Disclosure of fair value measurement of liabilities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of liabilities [abstract] | |||||||||||||||
| Disclosure of fair value measurement of liabilities [line items] | |||||||||||||||
| Liabilities | — | — | — |
41 6 .1
GBP
|
— |
4 4 5 .7
GBP
|
— | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, liabilities [abstract] | |||||||||||||||
| 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 |
0. 3
GBP
|
6,000,000
GBP
|
303. 8
GBP
|
734. 2
GBP
|
42 4 .1
GBP
|
70 0.8
GBP
|
0. 3
GBP
|
249. 8
GBP
|
6,000,000
GBP
|
444. 7
GBP
|
4 59.9
GBP
|
181,400,000
GBP
|
6 4 7. 6
GBP
|
0. 3
GBP
|
6,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |