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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, 2016	Oct. 31, 2015	Oct. 31, 2014
Income Tax Disclosure [Abstract]
Statutory federal tax	$ 115,343	$ 98,564	$ 95,251
State tax (benefit), net of federal effect	11,015	(4,764)	(4,306)
Tax credits	(36,979)	(13,301)	(5,153)
Tax on foreign earnings less than U.S. statutory tax	(68,246)	(56,536)	(61,376)
Tax settlements	(16,479)	(6,251)	(19,645)
Stock based compensation	5,709	5,406	5,675
Changes in valuation allowance	428	(216)	(235)
Federal statute lapses	0	(2,265)	(6,746)
Integration of acquired technologies, tax amount	37,525	33,015	4,715
Undistributed Earnings of Foreign Subsidiaries	9,595	0	0
Other	4,811	2,024	4,838
Provision (Benefit) for income taxes	$ 62,722	$ 55,676	$ 13,018

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