CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Statement of Comprehensive Income [Abstract]        
Net income $ 43 $ 3 $ 73 $ 16
Foreign currency translation adjustments:        
Attributable to Meritor, Inc. (33) 10 (67) 0
Attributable to noncontrolling interest 0 0 (1) 0
Other reclassification adjustment 0 0 1 0
Pension and other postretirement benefit related adjustments 11 10 23 20
Unrealized gain (loss) on investments and foreign exchange contracts 0 2 (1) 2
Other comprehensive income (loss), net of tax (22) 22 (45) 22
Total comprehensive income 21 25 28 38
Less: Comprehensive income attributable to noncontrolling interest 0 (2) 0 (4)
Comprehensive income attributable to Meritor, Inc. $ 21 $ 23 $ 28 $ 34