Earnings per Share (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Aug. 31, 2016
May 31, 2016
Aug. 31, 2015
Aug. 31, 2016
Aug. 31, 2015
Earnings Per Share [Abstract]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   54.6      
Weighted average common shares outstanding:          
Shares used in basic EPS calculation 340.1   243.1 273.5 244.1
Effect of dilutive securities:          
Restricted stock units 0.0   1.7 2.2 1.9
Stock options 0.0   0.0 1.8 0.0
Shares used in diluted EPS calculation 340.1   244.8 277.5 246.0