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Goodwill - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024
Goodwill [Line Items] |  |  |
Goodwill and other intangible assets, net | $ 563,800,000 | $ 563,800,000 | $ 629,800,000
Goodwill | 527,144,000 | 527,144,000 | 592,293,000
Non-cash, pre-tax goodwill impairment charge | 69,055,000 | 69,055,000 |
Product Manufacturing [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  |  | $ 69,055,000
Non-cash, pre-tax goodwill impairment charge |  | 69,055,000 |
Retail Operations Reportable Segment [Member] |  |  |
Goodwill [Line Items] |  |  |
Non-cash, pre-tax goodwill impairment charge | 0 | 0 |
Operating Segments [Member] | Product Manufacturing [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 0 | 0 |
Non-cash, pre-tax goodwill impairment charge | $ 69,100,000 | $ 69,100,000 |

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