Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
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As at 2022-04-30 |
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As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — | — |
9,886,000,000
GBP
|
— | — |
8,700,000,000
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 | — | — | — | — | — | — | — |
5,652,000,000
GBP
|
— | — |
5,165,000,000
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 |
1,352,000,000
GBP
|
105,000,000
GBP
|
2, 248
GBP
|
4,23 2
GBP
|
2,000,000
GBP
|
137,000,000
GBP
|
9,000,000
GBP
|
4,234,000,000
GBP
|
6 09
GBP
|
3,000,000
GBP
|
3,535,000,000
GBP
|
84,000,000
GBP
|
2,241,000,000
GBP
|
53,000,000
GBP
|
1,189,000,000
GBP
|
2,000,000
GBP
|
3,533,000,000
GBP
|
137,000,000
GBP
|
3,000,000
GBP
|
2,238,000,000
GBP
|
14,000,000
GBP
|
137,000,000
GBP
|
39,000,000
GBP
|
1,003,000,000
GBP
|
3,350,000,000
GBP
|
1,000,000
GBP
|
3,351,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |