Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
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As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
4,792 . 2
GBP
|
— | — | — | — | — |
4, 623 .1
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 ,1 6 7. 0
GBP
|
— | — | — | — | — |
1,1 0 4 .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 |
3,625. 2
GBP
|
3 , 0 55 .1
GBP
|
23 6.5
GBP
|
276. 8
GBP
|
24 . 9
GBP
|
31,900,000
GBP
|
3 , 51 8 .4
GBP
|
2 ,950. 9
GBP
|
31,900,000
GBP
|
236,500,000
GBP
|
22 .3
GBP
|
276 .8
GBP
|
2, 693. 9
GBP
|
236,500,000
GBP
|
276 . 8
GBP
|
3 , 258 . 3
GBP
|
1 9.2
GBP
|
3 1.9
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |