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Debt (Tables)
6 Months Ended
Jun. 30, 2011
Debt [Abstract]  
Long-term debt
 
                 
    June 30,
    December 31,
 
    2011     2010  
    (In thousands)  
 
0.94% senior exchangeable notes due May 2011
  $     $ 1,378,178  
6.15% senior notes due February 2018
    966,883       966,276  
9.25% senior notes due January 2019
    1,125,000       1,125,000  
5.00% senior notes due September 2020
    697,190       697,037  
5.375% senior notes due August 2012
    274,291       273,977  
Revolving credit facilities
    1,200,000        
Other
    2,103       2,676  
                 
      4,265,467       4,443,144  
Less: current portion
    881       1,379,018  
                 
    $ 4,264,586     $ 3,064,126