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COMMON EQUITY - ANTIDILUTIVE SECURITIES (Details)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Stock-based compensation
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted-average outstanding securities that had an anti-dilutive effect 0 0.4 0.2 0.2
Deferred compensation
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted-average outstanding securities that had an anti-dilutive effect 0 0.2 0.3 0.1