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Goodwill
6 Months Ended
Mar. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Disclosure [Text Block]

5. Goodwill

     A summary of the changes in the carrying value of goodwill are presented below (in millions):

Commercial Aftermarket
Truck       Industrial       & Trailer       Total
Balance at September 30, 2011       $      150 $      109 $      172 $      431
       Foreign currency translation 2 2
Balance at March 31, 2012 $ 152 $ 109 $ 172 $ 433