Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jul. 04, 2015	Jul. 04, 2015	Sep. 30, 2014
Goodwill [Line Items]
Goodwill	$ 1,071,796	$ 1,071,796	$ 1,012,527
Goodwill, Translation and Purchase Accounting Adjustments		(25,839)
Segment, Software Products [Member]
Goodwill [Line Items]
Goodwill	1,019,249	1,019,249	959,768
Goodwill, Translation and Purchase Accounting Adjustments		(25,627)
Segment, Services [Member]
Goodwill [Line Items]
Goodwill	52,547	52,547	$ 52,759
Goodwill, Translation and Purchase Accounting Adjustments		(212)
Acquired entity name: Axeda [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		(180)
Acquired entity name: Axeda [Member] | Segment, Software Products [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		(180)
Acquired entity name: Axeda [Member] | Segment, Services [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		0
Acquired entity name: ColdLight [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 85,288	85,288
Acquired entity name: ColdLight [Member] | Segment, Software Products [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		$ 85,288