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STOCKHOLDERS' EQUITY (Tables)
12 Months Ended
Dec. 31, 2010
Stockholders' Equity Note [Abstract] 
Reserved Treasury Stock
Reserved Treasury Stock at December 31
 
  
 
  
Shares in millions
 
2010

 
2009

 
2008

Stock option and deferred stock plans
 
5.1

 
12.2

 
57.0