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Income (Loss) per Share (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Income (Loss) per Share [Abstract]        
Potentially dilutive securities included for the calculating earnings per share (in shares) 4.2      
Dilutive common shares excluded from the calculations of diluted loss per share (in shares)   18.7 62.9 18.7