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Stock-Based Compensation - Summarized Activity Related to Director Deferred Compensation Shares (Detail) - Directors [Member] - Deferred Compensation Share Equivalent Units [Member]
shares in Thousands
 12 Months Ended
Oct. 31, 2018
$ / shares
shares
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]  
Number of Shares, Outstanding, Beginning balance | shares 101
Number of Shares, Restricted share units vested | shares 5
Number of Shares, Dividend equivalents | shares 1
Number of Shares, Outstanding, Ending balance | shares 107
Weighted-Average Grant Date Fair Value Per Share, Beginning balance | $ / shares $ 46.74
Weighted-Average Grant Date Fair Value Per Share, Restricted share units vested | $ / shares 126.49
Weighted-Average Grant Date Fair Value Per Share, Dividend equivalents | $ / shares 138.50
Weighted-Average Grant Date Fair Value Per Share, Ending balance | $ / shares $ 51.24