Stock-based Compensation (Schedule of Classification of Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Total stock-based compensation expense	$ 11,810	$ 12,692	$ 23,703	$ 26,074
Cost of License Revenue
Total stock-based compensation expense	8	7	13	12
Cost of Service Revenue
Total stock-based compensation expense	1,420	1,358	3,032	2,921
Cost of Support Revenue
Total stock-based compensation expense	835	813	1,661	1,763
Sales and Marketing
Total stock-based compensation expense	2,835	3,306	5,293	7,034
Research and Development
Total stock-based compensation expense	1,824	2,240	4,336	4,789
General and Administrative
Total stock-based compensation expense	$ 4,888	$ 4,968	$ 9,368	$ 9,555