Financial Assets and Liabilities - Unaudited Condensed Consolidated Statement of Operations Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Financial Assets and Liabilities [Line Items]
Total revenue	$ 1,247,766	$ 1,057,130	$ 3,797,250	$ 3,051,774
Operating Expenses	742,657	650,141	2,071,609	1,880,221
Net income	222,626	198,646	831,094	556,069
Foreign Exchange Contracts | Amount of gains (losses) recognized in OCI on derivatives (effective portion)
Financial Assets and Liabilities [Line Items]
Total revenue	(4,702)	251	(12,527)	1,892
Operating Expenses	(14,349)	3,413	(29,242)	7,079
Net income	(19,051)	3,664	(41,769)	8,971
Foreign Exchange Contracts | Amount of gains (losses) reclassified from OCI (effective portion)
Financial Assets and Liabilities [Line Items]
Total revenue	3,651	1,563	3,309	2,597
Operating Expenses	(3,687)	3,267	(4,852)	9,583
Net income	$ (36)	$ 4,830	$ (1,543)	$ 12,180