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Accounts Receivable (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2012
satellites
Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, net $ 5,437 $ 5,793
Number of satellites 2  
LightSquared [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, net $ 112