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Goodwill Other Intangible Assets and Other Long Term Assets - Summary of Changes in Carrying Amount of Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Goodwill [Line Items]
Beginning balance	$ 559,820	$ 235,585
Goodwill acquired	29,335	321,166
Foreign currency translation	3,138	3,069
Ending balance	592,293	559,820
Retail Operations [Member]
Goodwill [Line Items]
Beginning balance	490,786	166,551
Goodwill acquired	29,335	321,166
Foreign currency translation	3,138	3,069
Ending balance	523,259	490,786
Product Manufacturing [Member]
Goodwill [Line Items]
Beginning balance	69,034	69,034
Ending balance	$ 69,034	$ 69,034

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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