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COMPREHENSIVE INCOME (Tables)
9 Months Ended
Sep. 30, 2011
COMPREHENSIVE INCOME [Abstract] 
Schedule of Comprehensive Income (Loss)
  
Three months ended
  
Nine months ended
 
  
September 30
  
September 30
 
  
2011
  
2010
  
2011
  
2010
 
              
Net income
 $5.7  $13.6  $70.1  $98.3 
Other comprehensive loss, after tax
  (6.0)  (3.0)  (6.4)  (6.4)
Total comprehensive income (loss)
 $(.3) $10.6  $63.7  $91.9