Revenues Related To Operations By Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 443,747	$ 386,795	$ 1,301,804	$ 1,145,109
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	216,315	176,811	620,982	526,126
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	58,113	55,548	170,953	155,010
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	71,107	67,978	220,160	206,276
Asia-Pacific And Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 98,212	$ 86,458	$ 289,709	$ 257,697