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Earnings Per Share and Stock Issuances-Antidilutive Securities not Considered in Earnings Per Share Calculation (Details)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
May 31, 2014
May 31, 2013
May 31, 2014
May 31, 2013
Earnings Per Share, Basic and Diluted [Abstract]        
Anti-dilutive securities 1.6 0.3 1.3 0.3