Disclosure Of Fair Value Measurement [Text Block]
| Concept |
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 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 |
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
|
300,000
GBP
|
497,500,000
GBP
|
26,200,000
GBP
|
1,033,100,000
GBP
|
1,400,000
GBP
|
508,300,000
GBP
|
1,033,100,000
GBP
|
659,500,000
GBP
|
26,200,000
GBP
|
–
GBP
|
400,700,000
GBP
|
1,200,000
GBP
|
231,400,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |