Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — |
2,160,900,000
GBP
|
— |
2,501,400,000
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 | — | — | — | — |
1,231,700,000
GBP
|
— |
1,280,600,000
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 |
83,100,000
GBP
|
11,000,000
GBP
|
— |
728,400,000
GBP
|
929,200,000
GBP
|
106,700,000
GBP
|
1,220,800,000
GBP
|
83,100,000
GBP
|
1,011,300,000
GBP
|
11,000,000
GBP
|
115,400,000
GBP
|
1,147,900,000
GBP
|
1,330,700,000
GBP
|
88,700,000
GBP
|
83,100,000
GBP
|
11,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] | ||||||||||||||||
| Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [text block] | — | — |
|
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