Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Revenue:
Products	$ 1,865,826	$ 1,680,125	$ 1,454,991
Services	422,463	402,421	378,932
Total revenue	2,288,289	2,082,546	1,833,923
Cost of goods sold:
Products	1,083,022	967,510	868,805
Services	256,915	249,861	240,894
Total cost of goods sold	1,339,937	1,217,371	1,109,699
Gross profit	948,352	865,175	724,224
Operating expenses:
Research and development	401,180	383,408	364,179
Selling and marketing	328,325	304,170	266,338
General and administrative	126,824	122,432	114,002
Amortization of intangible assets	45,970	49,771	51,697
Restructuring costs	349	7,169	7,854
Total operating expenses	902,648	866,950	804,070
Income (loss) from operations	45,704	(1,775)	(79,846)
Interest and other income (loss), net	(25,262)	(5,744)	(15,200)
Interest expense	(47,115)	(44,042)	(39,653)
Loss on extinguishment of debt	0	(28,630)	0
Loss before income taxes	(26,673)	(80,191)	(134,699)
Provision for income taxes	13,964	5,240	9,322
Net loss	$ (40,637)	$ (85,431)	$ (144,021)
Basic net loss per common share (in dollars per share)	$ (0.38)	$ (0.83)	$ (1.45)
Diluted net loss per potential common share (in dollars per share)	$ (0.38)	$ (0.83)	$ (1.45)
Weighted average basic common shares outstanding (in shares)	105,783	102,350	99,341
Weighted average dilutive potential common shares outstanding (in shares)	105,783	102,350	99,341