Disclosure Of Fair Value Measurement [Text Block]
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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 | — | — | — | — | — | — |
28, 270 .2
GBP
|
— | — | — | — | — |
27,177,100,000
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 6 , 4 6 7. 1
GBP
|
— | — | — | — | — |
16 , 093 . 9
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 |
7, 3 4 5 . 0
GBP
|
74 9. 9
GBP
|
820. 1
GBP
|
548. 1
GBP
|
52 .6
GBP
|
— |
11 ,8 03 .1
GBP
|
1 , 882 .4
GBP
|
9,1 70. 8
GBP
|
4 0 7. 6
GBP
|
1 1 ,053. 2
GBP
|
2 .6
GBP
|
1 1,08 3. 2
GBP
|
821 .2
GBP
|
5 4 7. 0
GBP
|
52 .6
GBP
|
10,43 4. 1
GBP
|
1 , 882. 4
GBP
|
4 41 . 2
GBP
|
8, 551 .7
GBP
|
6 49. 1
GBP
|
6 , 6 5 7. 6
GBP
|
32 . 1
GBP
|
–
GBP
|
49. 2
GBP
|
–
GBP
|
32. 2
GBP
|
32. 2
GBP
|
536. 5
GBP
|
9 ,128.8
GBP
|
835,100,000
GBP
|
7 7. 5
GBP
|
8 , 0 7 7. 8
GBP
|
4 9. 2
GBP
|
1 ,0 51. 0
GBP
|
6,600,000
GBP
|
9,09 6 .6
GBP
|
6,600,000
GBP
|
6,5 40.7
GBP
|
8,045 .6
GBP
|
1 ,0 51 .0
GBP
|
40,600,000
GBP
|
7 7. 5
GBP
|
536. 5
GBP
|
6 , 57 2.9
GBP
|
40,600,000
GBP
|
9, 169.4
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
32. 2
GBP
|
835,100,000
GBP
|
9 , 1 3 7. 2
GBP
|
32. 2
GBP
|
–
GBP
|
–
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |