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Acquisitions
6 Months Ended
Jun. 30, 2011
Acquisitions [Abstract]  
Acquisitions
 
(11)   Acquisitions
 
In January 2010, we purchased an additional 20 percent equity interest in our Tenneco Tongtai (Dalian) Exhaust System Co. Ltd. joint venture investment in China for $15 million in cash. As a result of this purchase, our equity ownership percentage of this joint venture investment increased to 80 percent from 60 percent.