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Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Sep. 30, 2018
Gross Amount of Recognized Liabilities	$ 5,397		$ 5,397
Gross Amount of Recognized Assets	4,202		4,202
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	100	$ 2,200	$ 200	$ 5,400
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer			3 months
Forward Contracts \| Not Designated as Hedging Instrument
Derivative, Remaining Maturity			3 months
Forward Contracts \| Designated as Hedging Instrument
Gross Amount of Recognized Liabilities	3,336		$ 3,336		$ 0
Gross Amount of Recognized Assets	$ 0		$ 0		$ 440
Cash Flow Hedging \| Forward Contracts \| Designated as Hedging Instrument
Derivative, Remaining Maturity			15 months
Net Investment Hedging \| Forward Contracts \| Designated as Hedging Instrument
Derivative, Remaining Maturity			3 months