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Other Current Liabilities (Tables)
 6 Months Ended
Jun. 30, 2011
Other Current Liabilities [Abstract]  
Other Current Liabilities
                 
    June 30,
 		    December 31,
 		 
    2011     2010  
    (In millions)  
 
Other current liabilities:
               
Salaries, wages and benefits
  $ 88.9     $ 118.1  
Fair value of derivatives
    43.2       29.4  
Accrued liabilities
    391.8       376.5  
                 
Total other current liabilities
  $ 523.9     $ 524.0