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Debt (Tables)
9 Months Ended
Sep. 30, 2011
Debt [Abstract] 
Long-term debt
 
Long-term debt consists of the following:
 
                 
    September 30,
 		    December 31,
 		 
    2011     2010  
    (In thousands)  
 
5.375% senior notes due August 2012
  $ 274,448     $ 273,977  
6.15% senior notes due February 2018
    967,186       966,276  
9.25% senior notes due January 2019
    1,125,000       1,125,000  
5.00% senior notes due September 2020
    697,266       697,037  
4.625% senior notes due September 2021
    697,607       —  
0.94% senior exchangeable notes due May 2011
    —       1,378,178  
Revolving credit facilities
    600,000       —  
Other
    1,853       2,676  
                 
      4,363,360       4,443,144  
Less: current portion
    275,227       1,379,018  
                 
    $ 4,088,133     $ 3,064,126