Revenue from Contracts with Customers - Contract Liability (Details) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Nonrelated Party | ||
| Deferred revenue from contracts with customers | ||
| Deferred revenue, beginning of period | $ 640,457 | $ 274,499 |
| Additions | 441,764 | 616,304 |
| Revenue recognized related to amounts that were included in beginning balance of deferred revenue | (276,691) | (242,713) |
| Deferred revenue end of period | 805,530 | 648,090 |
| Related Party | ||
| Deferred revenue from contracts with customers | ||
| Deferred revenue, beginning of period | 79,916 | 38,162 |
| Additions | 25,636 | 27,622 |
| Revenue recognized related to amounts that were included in beginning balance of deferred revenue | (39,173) | (31,010) |
| Deferred revenue end of period | $ 66,379 | $ 34,774 |