Disclosure Of Fair Value Measurement [Text Block]
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2024-01-01 to 2024-12-31 |
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As at 2022-12-31 |
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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] | — | — | — | — | — | — | — |
C6. Fair value estimation
|
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| 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 |
1,723,000,000
GBP
|
3,606,000,000
GBP
|
15,000,000
GBP
|
–
GBP
|
25,000,000
GBP
|
1,000,000
GBP
|
725,000,000
GBP
|
— |
583,000,000
GBP
|
33,000,000
GBP
|
2,998,000,000
GBP
|
4,228,000,000
GBP
|
4,088,000,000
GBP
|
3,518,000,000
GBP
|
5,000,000
GBP
|
1,723,000,000
GBP
|
532,000,000
GBP
|
1,000,000
GBP
|
14,000,000
GBP
|
25,000,000
GBP
|
754,000,000
GBP
|
2,998,000,000
GBP
|
6,000,000
GBP
|
4,098,000,000
GBP
|
9,000,000
GBP
|
–
GBP
|
763,000,000
GBP
|
3,301,000,000
GBP
|
4,097,000,000
GBP
|
4,000,000
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
1,000,000
GBP
|
1,000,000
GBP
|
25,000,000
GBP
|
1,000,000
GBP
|
9,000,000
GBP
|
1,723,000,000
GBP
|
3,302,000,000
GBP
|
25,000,000
GBP
|
511,000,000
GBP
|
2,998,000,000
GBP
|
–
GBP
|
3,000,000
GBP
|
763,000,000
GBP
|
3,166,000,000
GBP
|
1,723,000,000
GBP
|
1,927,000,000
GBP
|
1,264,000,000
GBP
|
9,000,000
GBP
|
–
GBP
|
7,000,000
GBP
|
1,000,000
GBP
|
211,000,000
GBP
|
19,000,000
GBP
|
2,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |