Revenues Related To Operations By Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 499,257	$ 432,561	$ 974,394	$ 858,057
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	238,180	206,985	471,313	404,668
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	65,682	58,224	129,121	112,840
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	65,988	71,932	135,636	149,053
Asia-Pacific And Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 129,407	$ 95,420	$ 238,324	$ 191,496