Scope of Consolidation and Summary of Material Accounting Policies - Estimated useful lives, goodwill and impairment (Details) |
12 Months Ended |
|---|---|
Jun. 30, 2025 | |
| Useful lives | |
| Period of budgets used for cash flow forecasts | 5 years |
| Software and license | |
| Useful lives | |
| Estimated useful life of intangible assets | 3 years |
| Minimum | Other fixed assets and office equipment | |
| Useful lives | |
| Estimated useful life of property and equipment | 3 years |
| Maximum | Other fixed assets and office equipment | |
| Useful lives | |
| Estimated useful life of property and equipment | 15 years |