Stock-Based Compensation (Stock-Based Compensation Expense Included In Line Items Of Consolidated Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	$ 24,044	$ 24,082
Cost of revenues
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	2,905	3,816
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	5,476	4,933
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	11,078	9,843
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	$ 4,585	$ 5,490