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Long-Term Debt (Tables)
 12 Months Ended
Dec. 31, 2011
Credit Agreement/Long-Term Debt [Abstract]  
Long-term debt
                 
    December 31,
2011		     December 31,
2010		  
    (In millions)  

2016 Notes – 3.500% Notes due 2016

   $ 500     $ —    

2019 Notes - 8.125% Notes due 2019

     845       769  

2020 Notes - 6.875% Notes due 2020

     750       750  

2040 Notes - 8.125% Notes due 2040

     250       250  

2041 Notes - 7.000% Notes due 2041

     250       —    
   

 

 

    

 

 

  

Total long-term debt

   $ 2,595     $ 1,769