Segment Information (Revenue And Operating Income) (Details) (USD $)	3 Months Ended				9 Months Ended
	Jun. 30, 2012		Jul. 02, 2011		Jun. 30, 2012		Jul. 02, 2011
Revenue	$ 310,983,000		$ 291,783,000		$ 930,384,000		$ 827,524,000
Operating income	31,083,000		24,530,000		70,491,000		65,866,000
Sales and marketing expenses	(97,386,000)		(89,106,000)		(298,606,000)		(254,790,000)
General and administrative expenses	(29,851,000)		(31,882,000)		(90,574,000)		(80,078,000)
Loss on services customer contract			5,000,000
Software Products Segment [Member]
Revenue	229,706,000		212,137,000		688,322,000		617,203,000
Operating income	145,829,000		134,157,000		431,897,000		385,881,000
Services Segment [Member]
Revenue	81,277,000		79,646,000		242,062,000		210,321,000
Operating income	$ 12,491,000	[1]	$ 11,361,000	[1]	$ 27,774,000	[1]	$ 14,853,000	[1]

[1] In the first quarter of 2011, we made a strategic decision to enter into a contract with a customer in the automotive industry for which we expected our costs to exceed our revenue by approximately $5 million. Services segment operating income in the first three months of 2011 included immediate recognition of the approximately $5 million estimated loss on this contract.