Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-01-31 |
As at 2022-01-31 |
As at 2022-01-31 |
As at 2022-01-31 |
As at 2022-01-31 |
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As at 2021-01-31 |
As at 2021-01-31 |
As at 2021-01-31 |
As at 2021-01-31 |
As at 2021-01-31 |
As at 2021-01-31 |
As at 2021-01-31 |
As at 2020-01-31 |
As at 2020-01-31 |
As at 2020-01-31 |
As at 2020-01-31 |
As at 2020-01-31 |
As at 2020-01-31 |
As at 2020-01-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — |
12,352,000,000
GBP
|
— | — | — | — | — |
12,269,000,000
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 | — | — | — | — | — |
5,574,000,000
GBP
|
— | — | — | — | — |
5,698,000,000
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 |
50,000,000
GBP
|
325,000,000
GBP
|
2,228,000,000
GBP
|
4,025,000,000
GBP
|
46,000,000
GBP
|
6,778,000,000
GBP
|
196,000,000
GBP
|
361,000,000
GBP
|
332,000,000
GBP
|
2,228,000,000
GBP
|
3,630,000,000
GBP
|
6,571,000,000
GBP
|
23,000,000
GBP
|
43,000,000
GBP
|
2,994,000,000
GBP
|
332,000,000
GBP
|
2,228,000,000
GBP
|
228,000,000
GBP
|
43,000,000
GBP
|
23,000,000
GBP
|
5,802,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |