Accounting information and policies - Principal foreign exchange rates used in translation of financial statements (Details) |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2026
£ / $
|
Jun. 30, 2026
£ / $
€ / $
|
Jun. 30, 2025
£ / $
|
Jun. 30, 2025
£ / $
€ / $
|
Jun. 30, 2024
£ / $
|
Jun. 30, 2024
€ / $
£ / $
|
Jun. 30, 2026
€ / $
|
Jun. 30, 2025
€ / $
|
Jun. 30, 2024
€ / $
|
|
| Disclosure of foreign exchange rates [Line Items] | |||||||||
| Income statement and cash flows | 0.75 | 0.86 | 0.77 | 0.92 | 0.80 | 0.93 | |||
| Assets and liabilities | 0.76 | 0.76 | 0.73 | 0.73 | 0.79 | 0.79 | 0.88 | 0.85 | 0.93 |