Disclosure Of Fair Value Measurement [Text Block]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 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 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 2021-12-31 |
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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 | — |
3,058,000,000
GBP
|
— | — | — | — | — | — | — | — |
3,244,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,693,400,000
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 | — |
2,108,600,000
GBP
|
— | — | — | — | — | — | — | — |
2,372,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,948,600,000
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 | — |
949,400,000
GBP
|
1,041,600,000
GBP
|
–
GBP
|
7,700,000
GBP
|
4,000,000
GBP
|
9,300,000
GBP
|
27,200,000
GBP
|
140,400,000
GBP
|
941,700,000
GBP
|
872,000,000
GBP
|
6,300,000
GBP
|
4,000,000
GBP
|
75,000,000
GBP
|
854,400,000
GBP
|
127,700,000
GBP
|
9,300,000
GBP
|
50,700,000
GBP
|
865,700,000
GBP
|
115,500,000
GBP
|
762,300,000
GBP
|
75,000,000
GBP
|
744,800,000
GBP
|
5,400,000
GBP
|
740,500,000
GBP
|
4,300,000
GBP
|
4,000,000
GBP
|
9,300,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |