Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
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 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
1,948,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
1 ,76 8 .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 |
5 11.1
GBP
|
— | — | — | — | — | — | — | — | — |
50 6. 8
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 |
1,436,900,000
GBP
|
23 1.4
GBP
|
1 .0
GBP
|
1,113,000,000
GBP
|
5. 5
GBP
|
86 .0
GBP
|
3,100,000
GBP
|
3 .1
GBP
|
9 5 7. 6
GBP
|
700,000
GBP
|
1, 261. 3
GBP
|
3 . 5
GBP
|
3 .1
GBP
|
2 31.4
GBP
|
66,200,000
GBP
|
5,800,000
GBP
|
88 2.6
GBP
|
1. 9
GBP
|
6,000,000
GBP
|
3 .1
GBP
|
9 8.0
GBP
|
23 1.4
GBP
|
1 , 2 1 9.7
GBP
|
0. 5
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |