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Financial Instruments (Tables)
 6 Months Ended
Jul. 01, 2011
Financial Instruments (Tables) [Abstract]  
Carrying amounts and estimated fair values of the Company's financial instruments
 
                                 
    July 1, 2011     December 31, 2010  
    Carrying
 		    Estimated
 		    Carrying
 		    Estimated
 		 
    Amount     Fair Value     Amount     Fair Value  
    (in millions)  
 
Senior notes
  $   2,441     $   2,476     $   1,794     $   1,810  
Senior subordinated notes
    996       1,029       1,645       1,691  
CODES
    689       701       698       701  
Foreign currency forward contracts(1)
    14       14       17       17  
 
(1) See Note 16 for additional disclosures regarding the notional amounts and fair values of foreign currency forward contracts.