Disclosure Of Fair Value Measurement [Text Block]
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2023-01-01 to 2023-12-31 |
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| Disclosure of fair value measurement [text block] |
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| 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 | — |
328,843,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
309,583,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
351,924,000,000
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 | — |
319,243,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
299,369,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
335,234,000,000
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 | — |
9,600,000,000
GBP
|
2,228,000,000
GBP
|
279,000,000
GBP
|
200,000,000
GBP
|
901,000,000
GBP
|
318,000,000
GBP
|
87,000,000
GBP
|
496,000,000
GBP
|
9,282,000,000
GBP
|
5,265,000,000
GBP
|
10,214,000,000
GBP
|
355,000,000
GBP
|
200,000,000
GBP
|
924,000,000
GBP
|
496,000,000
GBP
|
10,342,000,000
GBP
|
310,000,000
GBP
|
2,328,000,000
GBP
|
85,000,000
GBP
|
9,904,000,000
GBP
|
51,000,000
GBP
|
4,792,000,000
GBP
|
248,000,000
GBP
|
51,000,000
GBP
|
19,454,000,000
GBP
|
—
GBP
|
2,523,000,000
GBP
|
—
GBP
|
16,690,000,000
GBP
|
2,523,000,000
GBP
|
—
GBP
|
2,523,000,000
GBP
|
—
GBP
|
—
GBP
|
241,000,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
241,000,000
GBP
|
941,000,000
GBP
|
10,308,000,000
GBP
|
—
GBP
|
200,000,000
GBP
|
248,000,000
GBP
|
7,556,000,000
GBP
|
941,000,000
GBP
|
200,000,000
GBP
|
—
GBP
|
10,308,000,000
GBP
|
19,202,000,000
GBP
|
252,000,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
16,438,000,000
GBP
|
—
GBP
|
252,000,000
GBP
|
—
GBP
|
241,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |