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Stockholders' Equity (Tables)
12 Months Ended
Sep. 30, 2011
Stockholders' Equity 
Schedule Of Accumulated Other Comprehensive Income (Loss)
     September 30  
     2011     2010  
     (Dollars in millions)  

Foreign currency translation adjustments

    $ 163      $ 144  

Unrealized holding gain on investments

      1        1  

Change in funded status of retirement plans

      (58 )      (57 ) 
  

 

 

    

 

 

  

Accumulated other comprehensive income

    $ 106      $ 88