NET PROPERTY - Additional Information (Details)	12 Months Ended
	Sep. 30, 2017
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Estimated useful lives of property (in years)	10 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of property (in years)	3 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Estimated useful lives of property (in years)	50 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of property (in years)	20 years
Maximum | Company-owned tooling
Property, Plant and Equipment [Line Items]
Estimated useful lives of property (in years)	3 years