Segment Disclosure - Revenues Related to Operations by Geographic Areas (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 2,724,880	$ 2,422,532	$ 2,242,211
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,357,364	1,205,880	1,143,816
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	308,419	287,381	300,352
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	247,631	239,964	218,794
Asia Pacific and Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 811,466	$ 689,307	$ 579,249