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 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — |
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| 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 |
74,700,000
GBP
|
511,700,000
GBP
|
671,200,000
GBP
|
1,900,000
GBP
|
8,800,000
GBP
|
— |
1,250,700,000
GBP
|
1,194,100,000
GBP
|
615,900,000
GBP
|
1,500,000
GBP
|
8,900,000
GBP
|
552,300,000
GBP
|
33,300,000
GBP
|
8,200,000
GBP
|
1,500,000
GBP
|
615,900,000
GBP
|
795,700,000
GBP
|
1,433,800,000
GBP
|
28,900,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |