Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — |
17,819,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
13,948,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | |||||||||||||||||||||||||||||
| Changes in fair value measurement, assets [abstract] | |||||||||||||||||||||||||||||
| Gains (losses) recognised in profit or loss, fair value measurement, assets [abstract] | |||||||||||||||||||||||||||||
| Gains (losses) recognised in profit or loss on exchange differences, fair value measurement, assets | — | — | — | — | — | — | — | — | — |
203,000,000
GBP
|
— | — | — | — | — | — | — | — |
9,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| 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 | — |
975,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,194,000,000
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 |
31,000,000
GBP
|
16,844,000,000
GBP
|
790,000,000
GBP
|
719,000,000
GBP
|
43,000,000
GBP
|
108,000,000
GBP
|
1,327,000,000
GBP
|
14,044,000,000
GBP
|
2,000,000
GBP
|
— |
43,000,000
GBP
|
100,000,000
GBP
|
10,151,000,000
GBP
|
719,000,000
GBP
|
6,000,000
GBP
|
1,125,000,000
GBP
|
789,000,000
GBP
|
12,754,000,000
GBP
|
— |
33,000,000
GBP
|
34,000,000
GBP
|
43,000,000
GBP
|
64,000,000
GBP
|
6,733,000,000
GBP
|
916,000,000
GBP
|
9,164,000,000
GBP
|
719,000,000
GBP
|
788,000,000
GBP
|
5,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |