Stock-based Compensation (Schedule of Classification of Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013
Total stock-based compensation expense	$ 12,566	$ 11,810	$ 25,330	$ 23,703
Cost of License Revenue
Total stock-based compensation expense	5	8	9	13
Cost of Service Revenue
Total stock-based compensation expense	1,426	1,420	3,024	3,032
Cost of Support Revenue
Total stock-based compensation expense	889	835	1,813	1,661
Sales and Marketing
Total stock-based compensation expense	3,019	2,835	5,518	5,293
Research and Development
Total stock-based compensation expense	2,147	1,824	4,836	4,336
General and Administrative
Total stock-based compensation expense	$ 5,080	$ 4,888	$ 10,130	$ 9,368