Revenue - Revenue Derived from Product Sales (Details) - Net Sales [Member] - Product Concentration Risk [Member]	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Manufacture [Member]
Disaggregation Of Revenue [Line Items]
Percentage of attributable to revenue	84.00%	84.00%	86.00%
MRO [Member]
Disaggregation Of Revenue [Line Items]
Percentage of attributable to revenue	14.00%	14.00%	13.00%
Service [Member]
Disaggregation Of Revenue [Line Items]
Percentage of attributable to revenue	2.00%	2.00%	1.00%