Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Abstract]
Maximum defer net employment income percentage	100.00%
Discretionary contribution amount	$ 9.8	$ 9.7	$ 9.7

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration