Segment Disclosure (Revenues Related To Operations By Geographic Areas) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 432,561	$ 393,670	$ 858,057	$ 758,314
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	206,985	182,615	404,668	349,315
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	58,224	50,133	112,840	99,462
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	71,932	71,698	149,053	138,299
Asia-Pacific And Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 95,420	$ 89,224	$ 191,496	$ 171,238