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Stockholders' Equity (Tables)
 9 Months Ended
Jun. 30, 2014
Equity [Abstract]  
Schedule of Activity in Noncontrolling Interests

The following table illustrates the noncontrolling interests activity for the periods presented:

 

     2014     2013  
     (Dollars in millions)  

Balance at September 30

    $ 132     $ 126  

Net income attributable to noncontrolling interests

      14       3  

Noncontrolling interest foreign currency translation adjustment

      (2 )      1  

Contribution from noncontrolling interests

      —         13  

Noncontrolling interest dividends

      (25 )      (17 ) 
  

 

 

    

 

 

  

Balance at June 30

    $ 119     $ 126