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Earnings Per Share and Stock Issuances - Reconciliation of Average Shares Outstanding (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2021
Aug. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract]        
Average shares outstanding - basic (shares) 267.4 266.7 267.2 266.3
Effect of dilutive securities: [Abstract]        
Stock options/Restricted Stock Units (RSUs)/MTIP 2.6 2.9 2.8 2.7
Average shares outstanding-diluted 270.0 269.6 270.0 269.0