Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 0.2	$ 1.8	$ 0.4	$ 3.2
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
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