BUSINESS SEGMENT INFORMATION (Details 2) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 65	$ 67	$ 67
Total capital expenditures	79	77	54
TOTAL ASSETS	2,195	2,485	2,552
Operating Segments
Segment Reporting Information [Line Items]
Total depreciation and amortization	65	67	67
Total capital expenditures	79	77	54
TOTAL ASSETS	2,017	2,213	2,307
Operating Segments | Commercial Truck & Industrial
Segment Reporting Information [Line Items]
Total depreciation and amortization	59	61	60
Total capital expenditures	71	71	46
TOTAL ASSETS	1,569	1,755	1,822
Operating Segments | Aftermarket & Trailer
Segment Reporting Information [Line Items]
Total depreciation and amortization	6	6	7
Total capital expenditures	8	6	8
TOTAL ASSETS	448	458	485
Corporate
Segment Reporting Information [Line Items]
TOTAL ASSETS	434	516	550
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total depreciation and amortization	65	67	67
Less: Accounts receivable sold under off-balance sheet factoring programs	$ (256)	$ (244)	$ (305)