Segment Information (Revenue and Operating Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Jun. 28, 2014		Jun. 29, 2013		Jun. 28, 2014 segments		Jun. 29, 2013
Number of operating and reportable segments					2
Revenue	$ 336,634		$ 314,996		$ 990,259		$ 948,696
Operating income	54,384	[1]	43,215	[1]	160,468	[1]	78,318	[1]
Sales and marketing expenses	(91,440)	[1]	(89,443)	[1]	(262,085)	[1]	(282,734)	[1]
General and administrative expenses	(34,331)	[1]	(29,473)	[1]	(99,749)	[1]	(100,300)	[1]
Other income (expense), net	(2,278)		3,181		(6,724)		(491)
Income before income taxes	52,106		46,396		153,744		77,827
Restructuring charges	514		3,137		1,581		34,349
Segment Software Products
Revenue	258,805		236,306		748,482		712,174
Operating income	166,639	[1]	148,904	[1]	479,736	[1]	434,031	[1]
Restructuring charges			1,000		100		12,600
Segment Services
Revenue	77,829		78,690		241,777		236,522
Operating income	13,516	[1]	13,227	[1]	42,566	[1]	27,321	[1]
Restructuring charges			300		200		6,600
Sales and Marketing
Restructuring charges			1,100		500		12,800
General and Administrative
Restructuring charges	500		700		800		2,300
Restructuring Plan 2013 Q3
Restructuring charges					1,600
Restructuring Plan 2013 Q2
Restructuring charges			$ 3,100				$ 34,300

[1] We recorded restructuring charges of $1.6 million in the first nine months of 2014. Software Products included $0.1 million; Services included $0.2 million; sales and marketing expenses included $0.5 million; and general and administrative expenses included $0.8 million of these restructuring charges. We recorded restructuring charges of $3.1 million and $34.3 million in the third quarter and first nine months of 2013, respectively. Software Products included $1.0 million and $12.6 million, respectively; Services included $0.3 million and $6.6 million, respectively; sales and marketing expenses included $1.1 million and $12.8 million, respectively; and general and administrative expenses included $0.7 million and $2.3 million, respectively, of these restructuring charges.