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Employee Severance and Termination Costs (Tables)
12 Months Ended
Dec. 31, 2011
Employee Severance and Termination Costs [Abstract]  
Employee severance and other termination costs incurred by reportable segment
                 
    Year Ended
December 31,
 
    2011     2010  
    (in millions)  

Reportable Segment

               

C3 ISR

  $ 1     $ 3  

Government Services

    5        

AM&M

    3       3  

Electronic Systems

    15       11  
   

 

 

   

 

 

 

Consolidated

  $ 24     $ 17