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 |
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
|
56,800,000
GBP
|
–
GBP
|
–
GBP
|
56,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
453,400,000
GBP
|
453,400,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||
| Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability | — | — | — | — |
4,100,000
GBP
|
— | — | — | — |
43,300,000
GBP
|
| Other comprehensive income that will not be reclassified to profit or loss, net of tax | — | — | — | — |
200,100,000
GBP
|
— | — | — | — |
102,100,000
GBP
|
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||
| Exchange differences on translation [abstract] | ||||||||||
| Gains (losses) on exchange differences on translation of foreign operations, net of tax | — | — | — | — |
–
GBP
|
1,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,600,000
GBP
|
| Reclassification adjustments on exchange differences on translation of foreign operations, net of tax | — | — | — | — |
–
GBP
|
4,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,000,000
GBP
|
| Other comprehensive income that will be reclassified to profit or loss, net of tax | — | — | — | — |
79,900,000
GBP
|
— | — | — | — |
9,900,000
GBP
|
| Comprehensive income |
–
GBP
|
143,300,000
GBP
|
79,900,000
GBP
|
–
GBP
|
223,200,000
GBP
|
400,000
GBP
|
–
GBP
|
–
GBP
|
361,600,000
GBP
|
361,200,000
GBP
|