Employee Benefit Plans - Deferred Plan Assets and Liabilities (Detail) - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Plan assets recorded in other long-term assets	$ 197,542	$ 163,185
Plan liabilities recorded in other long-term liabilities	$ 197,542	$ 163,185

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant