Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
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As at 2022-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2021-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
As at 2020-07-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — |
12,678,300,000
GBP
|
— | — | — | — | — |
12,034,500,000
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 | — | — | — |
11,020,800,000
GBP
|
— | — | — | — | — |
10,465,200,000
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 |
38,000,000
GBP
|
1,628,400,000
GBP
|
21,700,000
GBP
|
1,657,500,000
GBP
|
29,200,000
GBP
|
100,000
GBP
|
1,500,000
GBP
|
1,657,500,000
GBP
|
–
GBP
|
1,569,300,000
GBP
|
800,000
GBP
|
22,400,000
GBP
|
1,000,000
GBP
|
1,570,300,000
GBP
|
300,000
GBP
|
38,000,000
GBP
|
1,555,500,000
GBP
|
1,300,000
GBP
|
1,300,000
GBP
|
1,000,000
GBP
|
38,000,000
GBP
|
1,449,600,000
GBP
|
1,450,600,000
GBP
|
15,600,000
GBP
|
1,435,000,000
GBP
|
200,000
GBP
|
5,700,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |