Goodwill and Intangible Assets (Changes in Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Oct. 02, 2015
Goodwill [Roll Forward]
Goodwill at October 2, 2015	$ 856,700	$ 851,000
Goodwill, Acquired During Period	16,600	3,300
Goodwill, Purchase Accounting Adjustments	0	2,400
Goodwill, Impairment Loss	0	0
Goodwill at September 30, 2016	$ 873,300	$ 856,700