Segment Information (Revenue and Operating Income) (Details) $ in Thousands		3 Months Ended			9 Months Ended
		Jul. 04, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jun. 28, 2014 USD ($)	Jul. 04, 2015 USD ($) segments	Jun. 28, 2014 USD ($)
Number of operating and reportable segments | segments					2
Revenue		$ 303,113		$ 336,634	$ 942,674	$ 990,259
Operating income	[1]	21,607		54,384	63,226	160,468
Sales and marketing expenses	[1]	(88,715)		(91,440)	(271,257)	(262,085)
General and administrative expenses	[1]	(48,072)		(34,331)	(123,918)	(99,749)
Interest and other income (expense), net		(3,668)		(2,278)	(10,492)	(6,724)
Income before income taxes		17,939		52,106	52,734	153,744
Restructuring charges		4,393	$ 26,800	514	42,625	1,581
Segment Software Products
Revenue		235,371		258,805	723,313	748,482
Operating income	[1]	145,016		166,639	428,533	479,736
Restructuring charges		1,500			11,500	100
Segment Services
Revenue		67,742		77,829	219,361	241,777
Operating income	[1]	13,378		$ 13,516	29,868	42,566
Restructuring charges		600			11,400	200
Sales and Marketing
Restructuring charges		2,300			15,100	500
General and Administrative
Restructuring charges		$ (28)			$ 4,600	$ 800

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