Segment Disclosure (Revenues Related to Operations by Geographic Areas) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Consolidated	$ 386,795	$ 336,929	$ 1,145,109	$ 1,005,202
United States [Member]
Consolidated	176,811	165,841	526,126	489,112
Europe [Member]
Consolidated	55,548	45,245	155,010	136,482
Japan [Member]
Consolidated	67,978	61,261	206,276	187,504
Asia-Pacific and Other [Member]
Consolidated	$ 86,458	$ 64,582	$ 257,697	$ 192,104