Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
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As at 2024-03-31 |
As at 2024-03-31 |
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As at 2024-03-31 |
As at 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — |
1,054,100,000
GBP
|
— | — | — | — | — | — | — |
759,600,000
GBP
|
— | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [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 |
4,700,000
GBP
|
358,600,000
GBP
|
74,300,000
GBP
|
490,100,000
GBP
|
53,900,000
GBP
|
1,400,000
GBP
|
2,300,000
GBP
|
359,300,000
GBP
|
4,000,000
GBP
|
3,100,000
GBP
|
3,000,000
GBP
|
361,100,000
GBP
|
2,300,000
GBP
|
378,600,000
GBP
|
2,400,000
GBP
|
3,100,000
GBP
|
–
GBP
|
375,400,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |