Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2024-03-31 |
As at 2024-03-31 |
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2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
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As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
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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 |
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| 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 | — | — | — | — | — | — | — | — | — | — | — |
441,800,000
GBP
|
— | — | — | — |
460,300,000
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 | — | — | — | — | — | — | — | — | — | — | — |
304,000,000
GBP
|
— | — | — | — |
354,600,000
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 |
59,200,000
GBP
|
20,400,000
GBP
|
137,800,000
GBP
|
6,300,000
GBP
|
36,500,000
GBP
|
–
GBP
|
108,500,000
GBP
|
1,400,000
GBP
|
–
GBP
|
500,000
GBP
|
— |
137,800,000
GBP
|
9,400,000
GBP
|
15,500,000
GBP
|
105,700,000
GBP
|
6,300,000
GBP
|
105,700,000
GBP
|
108,200,000
GBP
|
1,400,000
GBP
|
–
GBP
|
500,000
GBP
|
–
GBP
|
63,300,000
GBP
|
59,200,000
GBP
|
9,400,000
GBP
|
500,000
GBP
|
3,000,000
GBP
|
–
GBP
|
73,400,000
GBP
|
22,200,000
GBP
|
1,200,000
GBP
|
104,400,000
GBP
|
72,400,000
GBP
|
3,000,000
GBP
|
60,700,000
GBP
|
1,000,000
GBP
|
11,800,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |