Leases - Schedule of Lessee Assets and Liabilities (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Sep. 30, 2024 |
Jun. 30, 2024 |
|---|---|---|---|
| Lease assets: | |||
| Operating lease right-of-use assets | $ 236,064 | $ 226,602 | $ 235,030 |
| Financing lease assets | $ 1,210 | $ 1,559 | $ 1,832 |
| Finance Lease, Other Assets, Statement of Financial Position [Extensible Enumeration] | Other Assets, Noncurrent | Other Assets, Noncurrent | Other Assets, Noncurrent |
| Total lease assets | $ 237,274 | $ 228,161 | $ 236,862 |
| Current: | |||
| Operating lease liabilities | 60,183 | 58,998 | 58,905 |
| Financing lease liabilities | $ 657 | $ 570 | $ 596 |
| Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accounts payable, accrued expenses and other current liabilities | Accounts payable, accrued expenses and other current liabilities | Accounts payable, accrued expenses and other current liabilities |
| Total current lease liabilities | $ 60,840 | $ 59,568 | $ 59,501 |
| Non-current: | |||
| Operating lease liabilities | 184,295 | 180,616 | 188,996 |
| Financing lease liabilities | $ 695 | $ 1,110 | $ 1,352 |
| Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent |
| Total non-current lease liabilities | $ 184,990 | $ 181,726 | $ 190,348 |
| Total lease liabilities | $ 245,830 | $ 241,294 | $ 249,849 |