Disclosure Of Fair Value Measurement [Text Block]
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As at 2022-12-31 |
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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 | — | — | — | — | — | — | — | — |
184,224,000,000
GBP
|
189,180,000,000
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 | — | — | — | — | — | — | — | — |
180,901,000,000
GBP
|
185,096,000,000
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 |
14,435,000,000
GBP
|
383,000,000
GBP
|
120,000,000
GBP
|
42,000,000
GBP
|
6,000,000
GBP
|
3,281,000,000
GBP
|
11,642,000,000
GBP
|
9,000,000
GBP
|
3,323,000,000
GBP
|
4,084,000,000
GBP
|
15,223,000,000
GBP
|
11,633,000,000
GBP
|
43,000,000
GBP
|
379,000,000
GBP
|
119,000,000
GBP
|
21,000,000
GBP
|
4,041,000,000
GBP
|
26,000,000
GBP
|
4,311,000,000
GBP
|
11,613,000,000
GBP
|
48,000,000
GBP
|
370,000,000
GBP
|
15,504,000,000
GBP
|
47,000,000
GBP
|
119,000,000
GBP
|
4,263,000,000
GBP
|
70,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |