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		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Financial Assets and Liabilities [Line Items]
Total revenue	$ 1,394,863	$ 1,279,229	$ 2,756,203	$ 2,549,484
Operating Expenses	809,517	662,717	1,630,571	1,328,952
Net income	272,910	294,781	544,446	608,468
Foreign Exchange Contracts | Amount of  gains (losses) recognized in OCI on derivatives (effective portion)
Financial Assets and Liabilities [Line Items]
Total revenue	1,149	(7,008)	6,416	(7,825)
Operating Expenses	(5,679)	(14,124)	31,166	(14,892)
Net income	(4,530)	(21,132)	37,582	(22,717)
Foreign Exchange Contracts | Amount of gains (losses) reclassified from OCI (effective portion)
Financial Assets and Liabilities [Line Items]
Total revenue	(5,537)	229	(9,504)	(342)
Operating Expenses	(3,737)	(891)	(8,127)	(1,165)
Net income	$ (9,274)	$ (662)	$ (17,631)	$ (1,507)