Disclosure Of Fair Value Measurement [Text Block]
| Concept |
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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As at 2021-12-31 |
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As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — |
11,418,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
10,478,000,000
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 | — | — | — | — | — |
3,562,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,665,000,000
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 |
5,775,000,000
GBP
|
171,000,000
GBP
|
1,094,000,000
GBP
|
207,000,000
GBP
|
6,000,000
GBP
|
7,856,000,000
GBP
|
7,643,000,000
GBP
|
640,000,000
GBP
|
305,000,000
GBP
|
4,970,000,000
GBP
|
6,810,000,000
GBP
|
306,000,000
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
170,000,000
GBP
|
1,064,000,000
GBP
|
640,000,000
GBP
|
6,813,000,000
GBP
|
6,564,000,000
GBP
|
2,845,000,000
GBP
|
640,000,000
GBP
|
6,666,000,000
GBP
|
2,886,000,000
GBP
|
99,000,000
GBP
|
3,000,000
GBP
|
134,000,000
GBP
|
327,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |