Significant Accounting Policies - Fiscal Year, Basis of Presentation, Cash Equivalents and Concentration of Credit Risk (Details) $ in Millions	12 Months Ended
	Oct. 03, 2015 USD ($) months customers weeks	Sep. 27, 2014 customers weeks
Product Information [Line Items]
Fiscal Period, Number of Weeks | weeks	53	52
Cash and cash equivalents held outside of U.S.	$ 271.3
Cash and Cash Equivalents, Foreign Operations in Foreign Currency	$ 90.0
Maximum
Product Information [Line Items]
Highly liquid investments maturities (in months) | months	3
Accounts Receivable [Member]
Product Information [Line Items]
Number of Customers, Represent 10 Percent or more of Accounts Receivable | customers	1	2
Customer 1 [Member] | Accounts Receivable [Member]
Product Information [Line Items]
Concentration Risk, Percentage	21.40%	15.20%
Customer 2 [Member] | Accounts Receivable [Member]
Product Information [Line Items]
Concentration Risk, Percentage		11.60%