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Accounts, Notes and Other Receivables
9 Months Ended
Sep. 30, 2011
Accounts, Notes And Other Receivables [Abstract] 
Accounts, Notes and Other Receivables
       
Note 7. Accounts, Notes and Other Receivables      
   September 30,  December 31,
   2011  2010
       
 Trade$7,101 $6,471
 Other 455  647
   7,556  7,118
 Less - Allowance for doubtful accounts (240)  (277)
  $7,316 $6,841

Trade Receivables includes $1,495, and $1,307 million of unbilled balances under long-term contracts as of September 30, 2011 and December 31, 2010, respectively. These amounts are billed in accordance with the terms of customer contracts to which they relate.