Related Party Transactions (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Related Party Transaction [Line Items]
Total revenues	$ 1,936,310,000	$ 1,744,822,000	$ 1,228,206,000
Accounts receivable, net	113,175,000	57,960,000
Accounts payable	27,113,000	27,306,000
Affiliated Entity
Related Party Transaction [Line Items]
Purchase of inventories	94,300,000	84,200,000	78,400,000
Related party expenses incurred	2,100,000	2,800,000	2,300,000
Accounts receivable, net	0	2,000,000
Accounts payable	4,700,000	200,000
Affiliated Entities and Individuals
Related Party Transaction [Line Items]
Total revenues	1,100,000	6,300,000	1,900,000
Costs and expenses, related party	$ 100,000	$ 200,000	$ 200,000