Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Revenue:
Products	$ 460,821	$ 413,217	$ 893,762	$ 766,274
Services	99,240	94,495	200,002	194,531
Total revenue	560,061	507,712	1,093,764	960,805
Cost of goods sold:
Products	257,632	239,441	502,848	435,962
Services	64,738	58,758	127,374	119,535
Total cost of goods sold	322,370	298,199	630,222	555,497
Gross profit	237,691	209,513	463,542	405,308
Operating expenses:
Research and development	103,492	100,787	204,989	189,912
Selling and marketing	83,662	74,475	162,010	141,063
General and administrative	31,882	30,883	61,979	59,091
Amortization of intangible assets	11,493	12,439	23,932	24,892
Restructuring costs	0	1,509	115	6,539
Total operating expenses	230,529	220,093	453,025	421,497
Income (loss) from operations	7,162	(10,580)	10,517	(16,189)
Interest and other income (loss), net	(1,905)	(2,716)	(7,903)	(2,853)
Interest expense	(11,020)	(11,392)	(22,048)	(22,124)
Loss on extinguishment of debt	0	0	0	(28,630)
Loss before income taxes	(5,763)	(24,688)	(19,434)	(69,796)
Provision for income taxes	4,395	2,391	6,660	4,607
Net loss	$ (10,158)	$ (27,079)	$ (26,094)	$ (74,403)
Basic net loss per common share (in dollars per share)	$ (0.10)	$ (0.27)	$ (0.25)	$ (0.73)
Diluted net loss per potential common share (in dollars per share)	$ (0.10)	$ (0.27)	$ (0.25)	$ (0.73)
Weighted average basic common shares outstanding (in shares)	105,451	101,913	104,977	101,560
Weighted average dilutive potential common shares outstanding (in shares)	105,451	101,913	104,977	101,560