Statement Of Comprehensive Income [Abstract]
| Concept |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
2023-07-01 to 2024-06-30 |
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 |
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 |
2022-07-01 to 2023-06-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,900,000
GBP
|
–
GBP
|
4,900,000
GBP
|
–
GBP
|
64,000,000
GBP
|
4,900,000
GBP
|
68,900,000
GBP
|
–
GBP
|
138,300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
138,300,000
GBP
|
138,300,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
23,200,000
GBP
|
–
GBP
|
23,200,000
GBP
|
–
GBP
|
— | — | — |
–
GBP
|
95,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
95,100,000
GBP
|
— |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,100,000
GBP
|
4,100,000
GBP
|
–
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
–
GBP
|
15,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
15,600,000
GBP
|
— |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
5,600,000
GBP
|
–
GBP
|
5,600,000
GBP
|
–
GBP
|
— | — | — |
–
GBP
|
19,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
19,500,000
GBP
|
— |
| Other comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
17,600,000
GBP
|
4,100,000
GBP
|
21,700,000
GBP
|
–
GBP
|
— | — | — |
–
GBP
|
75,600,000
GBP
|
–
GBP
|
15,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
91,200,000
GBP
|
— |
| Comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
22,500,000
GBP
|
4,100,000
GBP
|
26,600,000
GBP
|
–
GBP
|
— | — | — |
–
GBP
|
62,700,000
GBP
|
–
GBP
|
15,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
47,100,000
GBP
|
— |
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — |
26,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
47,100,000
GBP
|
— |