Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-03-31 |
As at 2022-03-31 |
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As at 2020-03-31 |
As at 2020-03-31 |
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As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — |
8 59. 1
GBP
|
— | — | — | — |
65 1. 8
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 | — | — | — | — | — | — |
5 3 0.9
GBP
|
— | — | — | — |
502,100,000
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 |
–
GBP
|
1,400. 0
GBP
|
100,000
GBP
|
1 0.0
GBP
|
7. 0
GBP
|
1 ,7 1 1 . 3
GBP
|
328 . 2
GBP
|
–
GBP
|
–
GBP
|
1 , 5 3 7. 1
GBP
|
–
GBP
|
1 4 9.7
GBP
|
1,400. 0
GBP
|
10. 0
GBP
|
2 .7
GBP
|
100,000
GBP
|
–
GBP
|
–
GBP
|
1 0.1
GBP
|
70 . 5
GBP
|
16 5. 8
GBP
|
1 . 5
GBP
|
–
GBP
|
22 4 .7
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |