Income Taxes - Summary of Reconciliation of Beginning and Ending Balance of Gross Unrecognized Tax Benefit (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 83,149	$ 116,212
Increases in unrecognized tax benefits related to prior year tax positions	794	5,390
Decreases in unrecognized tax benefits related to prior year tax positions	(7,372)	(43,783)
Increases in unrecognized tax benefits related to current year tax positions	9,168	9,226
Decreases in unrecognized tax benefits related to settlements with taxing authorities	(1,538)	(1,411)
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations	(1,235)	(2,472)
Increases in unrecognized tax benefits acquired	0	778
Changes in unrecognized tax benefits due to foreign currency translation	(606)	(791)
Ending Balance	$ 82,360	$ 83,149