Disclosure Of Fair Value Measurement [Text Block]
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2023-01-01 to 2023-12-31 |
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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 | — |
3,902,100,000
GBP
|
— | — | — | — | — | — | — |
4,1 7 1 .5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [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 | — |
3,573,300,000
GBP
|
32,200,000
GBP
|
10,300,000
GBP
|
36,300,000
GBP
|
45,700,000
GBP
|
156,800,000
GBP
|
36,700,000
GBP
|
3,393,100,000
GBP
|
3,721 .7
GBP
|
9,400,000
GBP
|
45,700,000
GBP
|
36,300,000
GBP
|
29,100,000
GBP
|
46,300,000
GBP
|
156,800,000
GBP
|
3,548,900,000
GBP
|
23,000,000
GBP
|
4,1 7 4.4
GBP
|
1 1 .4
GBP
|
36,300,000
GBP
|
11. 5
GBP
|
4,390,300,000
GBP
|
45,700,000
GBP
|
1 56.8
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |