Segment Disclosure - Revenues Related to Operations by Geographic Areas (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 615,204	$ 555,805	$ 1,788,813	$ 1,655,052
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	316,902	275,625	889,220	839,325
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	66,946	80,257	211,993	227,165
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	63,056	50,974	174,838	165,067
Asia-Pacific and Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 168,300	$ 148,949	$ 512,762	$ 423,495