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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares
12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Statement of Stockholders' Equity [Abstract]      
Dividends per share (in usd per share) $ 1.40 $ 1.28 $ 1.28