Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Lessee Lease Description [Line Items]
Total lease costs	$ 249,570	$ 240,924
Cost of Goods Sold and Selling, General and Administrative Expenses
Lessee Lease Description [Line Items]
Operating lease costs	179,121	180,624
Selling, General and Administrative Expenses
Lessee Lease Description [Line Items]
Amortization of leased assets	291	292
Variable lease costs	70,146	59,996
Interest Expense
Lessee Lease Description [Line Items]
Interest on lease liabilities	$ 12	$ 12

Amount of interest expense on finance lease liability.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
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-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amount of lease cost recognized by lessee for lease contract.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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