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Capital Stock, Earnings Per Share And Stock Issuance (Reconciliation Of Average Shares Outstanding) (Details) - shares
shares in Millions
12 Months Ended
Nov. 30, 2020
Nov. 30, 2019
Nov. 30, 2018
Earnings Per Share [Abstract]      
Average shares outstanding-basic 266.5 265.1 263.1
Stock options/RSUs 2.6 3.0 3.4
Average shares outstanding-diluted 269.1 268.1 266.5