Stock-Based Compensation (Schedule Of Classification Of Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Total stock-based compensation expense	$ 13,331	$ 11,560	$ 39,405	$ 32,458
Cost Of License Revenue [Member]
Total stock-based compensation expense	4	4	16	10
Cost Of Service Revenue [Member]
Total stock-based compensation expense	2,050	1,857	6,734	5,577
Sales And Marketing [Member]
Total stock-based compensation expense	3,334	3,062	10,368	7,841
Research And Development [Member]
Total stock-based compensation expense	1,886	2,010	6,675	6,152
General And Administrative [Member]
Total stock-based compensation expense	$ 6,057	$ 4,627	$ 15,612	$ 12,878