Segment Disclosure - Revenues Related to Operations by Geographic Areas (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 555,805	$ 521,812	$ 1,655,052	$ 1,518,460
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	275,625	268,228	839,325	745,458
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	80,257	65,881	227,165	203,645
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	50,974	61,517	165,067	184,219
Asia-Pacific And Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 148,949	$ 126,186	$ 423,495	$ 385,138