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Segment Information
 6 Months Ended
Jun. 30, 2011
Segment Information [Abstract]  
Segment Information
 
(14)   Segment Information
 
We are a global manufacturer with three geographic reportable segments: (1) North America, (2) Europe, South America and India (“Europe”), and (3) Asia Pacific. Each segment manufactures and distributes ride control and emission control products primarily for the automotive industry. We have not aggregated individual operating segments within these reportable segments. We evaluate segment performance based primarily on earnings before interest expense, income taxes, and noncontrolling interests. Products are transferred between segments and geographic areas on a basis intended to reflect as nearly as possible the “market value” of the products.
 
The following table summarizes certain Tenneco Inc. segment information:
 
                                         
    Segment
    North
 		      Asia
 		  Reclass &
 		   
    America   Europe   Pacific   Elims   Consolidated
    (Millions)
 
For the Three Months Ended June 30, 2011
                                       
Revenues from external customers
  $ 874     $ 817     $ 197     $ —     $ 1,888  
Intersegment revenues
    3       42       7       (52 )     —  
Earnings before interest expense, income taxes, and noncontrolling interests
    62       37       14       —       113  
For the Three Months Ended June 30, 2010
                                       
Revenues from external customers
  $ 738     $ 606     $ 158     $ —     $ 1,502  
Intersegment revenues
    2       42       7       (51 )     —  
Earnings before interest expense, income taxes, and noncontrolling interests
    50       30       13       —       93  
At June 30, 2011 and for the Six Months Then Ended
                                       
Revenues from external customers
  $ 1,725     $ 1,558     $ 365     $ —     $ 3,648  
Intersegment revenues
    6       79       13       (98 )     —  
Earnings before interest expense, income taxes, and noncontrolling interests
    124       61       22       —       207  
Total assets
    1,436       1,548       549       25       3,558  
At June 30, 2010 and for the Six Months Then Ended
                                       
Revenues from external customers
  $ 1,343     $ 1,167     $ 308     $ —     $ 2,818  
Intersegment revenues
    5       71       12       (88 )     —  
Earnings before interest expense, income taxes, and noncontrolling interests
    86       42       24       —       152  
Total assets
    1,310       1,254       397       19       2,980