Fair Value Measurements (Tables) |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Financial Assets Measured at Fair Value on a Recurring Basis | The following tables represent financial assets that we measured at fair value on a recurring basis at June 30, 2026 and September 30, 2025:
(1) Included in cash and cash equivalents on our condensed consolidated balance sheets at June 30, 2026 and September 30, 2025. Not included in these tables are cash deposits of $235.2 million and $134.1 million at June 30, 2026 and September 30, 2025, respectively. (2) Represents securities held under a non-qualified deferred compensation plan for certain officers and senior management employees, which are distributed upon separation from service or at a specific date while still employed. Included in marketable securities on our condensed consolidated balance sheets at June 30, 2026 and September 30, 2025.
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