Restructuring - Summary of Restructuring Expense and Gains (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Restructuring Cost And Reserve [Line Items]
Total in COGS	$ (5,788)	$ 18,316	$ 1,444
Total in Restructuring	17,205	27,577	4,611
Total Restructuring Expenses	11,417	45,893	6,055
Project Surge
Restructuring Cost And Reserve [Line Items]
Total in Restructuring			1,451
Distribution Center Consolidation And Store Optimization Plan
Restructuring Cost And Reserve [Line Items]
Total in COGS	(5,788)	19,403
Total in Restructuring	$ 17,205	26,110
Transformation Plan
Restructuring Cost And Reserve [Line Items]
Total in COGS		(1,087)	1,444
Total in Restructuring		$ 1,467	$ 3,160