Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of fair value measurement [text block] | — | — | — | — | — |
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— | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
6,336,000,000
GBP
|
7,029,000,000
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 | — | — | — | — | — | — |
3,956,000,000
GBP
|
4,490,000,000
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 |
36,000,000
GBP
|
1,998,000,000
GBP
|
148,000,000
GBP
|
215,000,000
GBP
|
17,000,000
GBP
|
— |
2,380,000,000
GBP
|
2,539,000,000
GBP
|
148,000,000
GBP
|
215,000,000
GBP
|
19,000,000
GBP
|
2,077,000,000
GBP
|
118,000,000
GBP
|
24,000,000
GBP
|
148,000,000
GBP
|
2,049,000,000
GBP
|
218,000,000
GBP
|
2,441,000,000
GBP
|
50,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |