Statement Of Changes In Equity [Abstract]
| Concept |
As at 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
As at 2023-06-30 |
As at 2023-06-30 |
As at 2023-06-30 |
2022-07-01 to 2023-06-30 |
As at 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
As at 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
As at 2023-06-30 |
2022-07-01 to 2023-06-30 |
As at 2023-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
As at 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
As at 2022-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity |
14,000,000
GBP
|
— | — |
61,600,000
GBP
|
300,000
GBP
|
329,700,000
GBP
|
— |
33,400,000
GBP
|
— | — | — | — |
155,700,000
GBP
|
— | — |
330,000,000
GBP
|
— |
65,000,000
GBP
|
156,500,000
GBP
|
155,700,000
GBP
|
100,000
GBP
|
33,400,000
GBP
|
14,600,000
GBP
|
425,200,000
GBP
|
— | — | — | — | — |
425,100,000
GBP
|
— | — | — | — | — |
65,000,000
GBP
|
360,300,000
GBP
|
33,400,000
GBP
|
361,300,000
GBP
|
14,600,000
GBP
|
155,700,000
GBP
|
65,000,000
GBP
|
100,000
GBP
|
–
GBP
|
91,700,000
GBP
|
–
GBP
|
900,000
GBP
|
900,000
GBP
|
360,400,000
GBP
|
–
GBP
|
900,000
GBP
|
65,000,000
GBP
|
–
GBP
|
33,400,000
GBP
|
361,200,000
GBP
|
92,600,000
GBP
|
155,700,000
GBP
|
–
GBP
|
14,600,000
GBP
|
100,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
GBP
|
95,700,000
GBP
|
— | — | — |
–
GBP
|
— |
101,500,000
GBP
|
400,000
GBP
|
6,200,000
GBP
|
–
GBP
|
— |
–
GBP
|
95,700,000
GBP
|
— |
95,300,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
64,900,000
GBP
|
64,900,000
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
64,900,000
GBP
|
–
GBP
|
46,200,000
GBP
|
18,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
–
GBP
|
95,700,000
GBP
|
— | — | — |
–
GBP
|
— | — |
400,000
GBP
|
— |
600,000
GBP
|
— |
–
GBP
|
96,300,000
GBP
|
— |
95,900,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
65,000,000
GBP
|
65,000,000
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
65,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |