Disclosure Of Fair Value Measurement [Text Block]
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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 | — |
2 7, 1 3 8 . 4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
25,755 . 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 | — |
16,0 23 .0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
16, 58 6 . 1
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 |
10,46 6. 3
GBP
|
11 ,115.4
GBP
|
821 . 2
GBP
|
5 4 7. 0
GBP
|
52 .6
GBP
|
1 ,8 82 .4
GBP
|
4 41 . 2
GBP
|
8,583,900,000
GBP
|
6 49. 1
GBP
|
6, 68 9. 8
GBP
|
32 . 1
GBP
|
4 9. 2
GBP
|
9,128,800,000
GBP
|
536 .5
GBP
|
6,600,000
GBP
|
8, 07 7. 8
GBP
|
835. 1
GBP
|
7 7. 5
GBP
|
9,16 9.4
GBP
|
6 , 572 .9
GBP
|
40,600,000
GBP
|
1 ,051 .0
GBP
|
49. 2
GBP
|
6 ,681 .1
GBP
|
1 , 47 2 .4
GBP
|
133 .6
GBP
|
3,921 . 1
GBP
|
6,6 81 .1
GBP
|
5,208,700,000
GBP
|
5 24 . 5
GBP
|
8 4 7. 1
GBP
|
–
GBP
|
400,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |