INVESTMENTS IN NON-CONSOLIDATED JOINT VENTURES (Details)	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	100.00%
Meritor WABCO Vehicle Control Systems [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	50.00%		50.00%		50.00%
Master Sistemas Automotivos Limitada [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	49.00%		49.00%		49.00%
Suspensys Sistemas Automotivos Ltda. [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	0.00%	[1]	0.00%	[1]	24.00%	[1]
Sistemas Automotrices De Mexico S.A. De C.V. [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	50.00%		50.00%		50.00%
Ege Fren Sanayii Ve Ticaret A.S. [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	49.00%		49.00%		49.00%
Automotive Axles Limited [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	36.00%		36.00%		36.00%
ZF Meritor LLC [Member]
Schedule of Equity Method Investments [Line Items]
Non-consolidated joint ventures and related direct ownership interest	50.00%		50.00%		50.00%

[1] Total direct and indirect ownership interest in fiscal year 2012 of 50 percent.