Revenues Related to Operations by Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 517,697	$ 499,257	$ 996,648	$ 974,394
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	243,603	238,180	477,230	471,313
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	71,110	65,682	137,764	129,121
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	58,382	65,988	122,702	135,636
Asia-Pacific And Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 144,602	$ 129,407	$ 258,952	$ 238,324