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Employee Benefit Plans - Pretax Intrinsic Value of Options Exercised and Their Average Exercise Prices (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018
Share-based Payment Arrangement [Abstract] |  |  |
Intrinsic value | $ 218,640 | $ 110,815 | $ 71,840
Average exercise price per share (in USD per share) | $ 51.76 | $ 44.29 | $ 38.18

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
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