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CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares
3 Months Ended
Feb. 28, 2019
Nov. 30, 2018
Feb. 28, 2018
Nov. 30, 2017
Condensed Consolidated Statement Of Shareholders' Equity [Abstract]        
Cash dividends, per share $ 0.61 $ 0.54 $ 0.54 $ 0.49