Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
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As at 2023-12-31 |
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As at 2022-12-31 |
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As at 2022-12-31 |
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| Disclosure of fair value measurement [text block] | — | — | — | — |
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— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
4,833,400,000
GBP
|
4,7 8 7 .8
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 | — | — | — | — | — | — |
1 ,326.8
GBP
|
1 ,369.3
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 |
236,500,000
GBP
|
2,935,700,000
GBP
|
25,600,000
GBP
|
32,000,000
GBP
|
— |
27 6.8
GBP
|
3,506,600,000
GBP
|
3,4 1 8.5
GBP
|
2,847 .7
GBP
|
2 36.5
GBP
|
25,600,000
GBP
|
31 . 9
GBP
|
2 7 6.8
GBP
|
3,439,300,000
GBP
|
25,600,000
GBP
|
2 36.5
GBP
|
2,868,500,000
GBP
|
31 . 9
GBP
|
2 7 6.8
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |