RESTRUCTURING COSTS (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended						12 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
South America labor reduction							$ 7
Performance Plus actions									24
Fiscal Year 2012 European Action									7
Variable Labor Reductions								5	5
Other							3		3
Segment Reorganization and Asia Pacific Realignment								16
M2016 footprint actions								2
Total restructuring costs	7	2	1	12	11	3	10	23	39
Commercial Truck & Industrial [Member]
Restructuring Cost and Reserve [Line Items]
South America labor reduction							7
Performance Plus actions									24
Fiscal Year 2012 European Action									7
Variable Labor Reductions								5	5
Other							1		0
Segment Reorganization and Asia Pacific Realignment								10
M2016 footprint actions								2
Total restructuring costs							8	17	36
Aftermarket & Trailer [Member]
Restructuring Cost and Reserve [Line Items]
South America labor reduction							0
Performance Plus actions									0
Fiscal Year 2012 European Action									0
Variable Labor Reductions								0	0
Other							1		2
Segment Reorganization and Asia Pacific Realignment								3
M2016 footprint actions								0
Total restructuring costs							1	3	2
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
South America labor reduction							0
Performance Plus actions									0
Fiscal Year 2012 European Action									0
Variable Labor Reductions								0	0
Other							1		1
Segment Reorganization and Asia Pacific Realignment								3
M2016 footprint actions								0
Total restructuring costs							$ 1	$ 3	$ 1