Income Taxes - Rate Reconciliation Between Provision for Income Taxes and Taxes Computed at Statutory Federal Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Income Tax Disclosure [Abstract]
Statutory federal tax	$ 114,557	$ 85,142	$ 134,084
State tax (benefit), net of federal effect	6,529	(32,351)	(20,071)
Tax credits	(34,485)	(35,142)	(24,365)
Tax on foreign earnings	23,467	(104,252)	(52,413)
Foreign-derived intangible income deduction	(26,615)	0	0
Tax settlements	(10,953)	(14,691)	(7,057)
Stock-based compensation	(25,356)	(19,293)	(26,205)
Changes in valuation allowance	(42,144)	78,192	47,745
Integration of acquired technologies	0	27,927	36,443
Undistributed earnings of foreign subsidiaries	6,341	(974)	(9,610)
Tax impact of repatriation	0	0	166,152
Impact of tax restructuring	0	(171,979)	0
Impact of Tax Act rate change	0	51,075	0
Transition tax	0	63,107	0
Other	1,798	4,264	1,832
Provision (benefit) for income taxes	$ 13,139	$ (68,975)	$ 246,535