Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 29, 2014	Sep. 30, 2013
Goodwill [Line Items]
Goodwill	$ 869,324	$ 769,095
Goodwill, Acquired During Period	102,190
Goodwill, Translation and Purchase Accounting Adjustments	(1,961)
Segment, Software Products [Member]
Goodwill [Line Items]
Goodwill	820,745	720,548
Goodwill, Acquired During Period	102,190
Goodwill, Translation and Purchase Accounting Adjustments	(1,993)
Segment, Services [Member]
Goodwill [Line Items]
Goodwill	48,579	48,547
Goodwill, Acquired During Period	0
Goodwill, Translation and Purchase Accounting Adjustments	$ 32