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EARNINGS PER COMMON SHARE Anti-dulitve Securities excluded from Calculation (Details)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Restricted Stock Units (RSUs) [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive shares excluded from the computation of earnings per share 0.3 0.3 0.4 0.3
Stock Options [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive shares excluded from the computation of earnings per share 0.4 0.4 0.4 0.4