Share-Based Compensation Expense (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Share-based compensation expense
Share-based compensation expense capitalized in inventory, net	$ 1	$ 142	$ (524)
Total share-based compensation	37,930	35,560	34,438
Cost of Sales [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	4,150	3,857	3,715
Product costs [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	2,269	2,140	2,116
Service costs [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	1,881	1,717	1,599
Operating Expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	33,779	31,561	31,247
Research and Development Expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	10,149	9,310	10,006
Selling and marketing expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	12,182	10,950	10,861
General and Administrative Expense [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	11,140	9,959	10,380
Acquisition and Integration Costs [Member]
Share-based compensation expense
Allocated Share-based Compensation Expense	$ 308	$ 1,342	$ 0