Summary of Significant Accounting Policies and Estimates - Government Incentives and Grants (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Summary of Significant Accounting Policies and Estimates | ||
| Reduction to cost of goods and services | $ 10.9 | $ 0.0 |