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Earnings (Loss) Per Share (Details 1) (Stock Compensation Plan [Member])
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Stock Compensation Plan [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Stock options, RSUs, MSUs, and performance shares 2.0 7.9 2.2 8.0