Share-Based Compensation Expense (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Share-based compensation expense
Share-based compensation expense capitalized in inventory, net	$ (47)	$ 1	$ 142
Total share-based compensation	32,394	37,930	35,560
Cost of Sales [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	3,618	4,150	3,857
Product costs [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	2,156	2,269	2,140
Service costs [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	1,462	1,881	1,717
Operating Expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	28,823	33,779	31,561
Research and Development Expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	8,567	10,149	9,310
Selling and marketing expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	11,558	12,182	10,950
General and Administrative Expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	8,691	11,140	9,959
Acquisition and Integration Costs [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	$ 7	$ 308	$ 1,342