Derivatives - Schedule of the Effect of Derivative Instruments on the Statements of Operations (Details) - Derivatives designated as hedging instruments - Derivatives in Cash Flow Hedging Relationships - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Forward currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) (OCI) on Derivatives (Effective Portion)	$ 3,625	$ 1,175	$ 6,339	$ (4,043)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) (OCI) on Derivatives (Effective Portion)	$ 0	$ 12	$ 0	$ 1