Statement Of Comprehensive Income [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
—
GBP
|
—
GBP
|
—
GBP
|
2 5 .7
GBP
|
—
GBP
|
—
GBP
|
25,700,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
15 .0
GBP
|
15,000,000
GBP
|
—
GBP
|
—
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||
| Other comprehensive income |
—
GBP
|
—
GBP
|
3,600,000
GBP
|
2 7. 5
GBP
|
—
GBP
|
3,000,000
GBP
|
34,100,000
GBP
|
5,300,000
GBP
|
—
GBP
|
—
GBP
|
2 4 .1
GBP
|
27,900,000
GBP
|
1. 5
GBP
|
—
GBP
|
| Comprehensive income | — | — | — | — | — | — |
59,800,000
GBP
|
— | — | — | — |
42,900,000
GBP
|
— | — |