Leases - Summary of Lease-Related Assets and Liabilities (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Sep. 30, 2025 |
|---|---|---|
| Operating leases: | ||
| Right-of-use asset | $ 72.7 | $ 72.1 |
| Current portion of lease liabilities | 25.0 | 24.7 |
| Lease liabilities | $ 53.7 | $ 53.5 |
| X | ||||||||||
- Definition Operating leases. No definition available.
|
| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|