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 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
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 |
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 |
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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 |
296,300,000
GBP
|
174,300,000
GBP
|
78,100,000
GBP
|
1,770,800,000
GBP
|
— |
1,378,300,000
GBP
|
167,600,000
GBP
|
7,900,000
GBP
|
1,363,100,000
GBP
|
295,400,000
GBP
|
1,834,000,000
GBP
|
970,600,000
GBP
|
408,700,000
GBP
|
249,100,000
GBP
|
162,500,000
GBP
|
150,300,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |