Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Revenue:
Products	$ 413,217	$ 384,726	$ 766,274	$ 718,399
Services	94,495	92,891	194,531	175,903
Total revenue	507,712	477,617	960,805	894,302
Cost of goods sold:
Products	239,441	234,372	435,962	432,124
Services	58,758	60,304	119,535	111,481
Total cost of goods sold	298,199	294,676	555,497	543,605
Gross profit	209,513	182,941	405,308	350,697
Operating expenses:
Research and development	100,787	90,399	189,912	180,063
Selling and marketing	74,475	62,517	141,063	126,928
General and administrative	30,883	26,670	59,091	56,334
Amortization of intangible assets	12,439	12,967	24,892	26,438
Restructuring costs	1,509	1,851	6,539	3,573
Total operating expenses	220,093	194,404	421,497	393,336
Loss from operations	(10,580)	(11,463)	(16,189)	(42,639)
Interest and other income (loss), net	(2,716)	(4,387)	(2,853)	(9,274)
Interest expense	(11,392)	(9,646)	(22,124)	(19,216)
Loss on extinguishment of debt	0	0	(28,630)	0
Loss before income taxes	(24,688)	(25,496)	(69,796)	(71,129)
Provision for income taxes	2,391	2,284	4,607	4,304
Net loss	$ (27,079)	$ (27,780)	$ (74,403)	$ (75,433)
Basic net loss per common share (in dollars per share)	$ (0.27)	$ (0.28)	$ (0.73)	$ (0.77)
Diluted net loss per potential common share (in dollars per share)	$ (0.27)	$ (0.28)	$ (0.73)	$ (0.77)
Weighted average basic common shares outstanding (in shares)	101,913	98,981	101,560	98,525
Weighted average dilutive potential common shares outstanding (in shares)	101,913	98,981	101,560	98,525