Derivative Financial Instruments (Notional Amounts Of Outstanding Forward Contracts) (Details) - Forward Contracts - USD ($) $ in Thousands	Dec. 29, 2018	Sep. 30, 2018
Not Designated as Hedging Instrument
Notional amounts	$ 347,515	$ 405,956
Not Designated as Hedging Instrument | Canadian / U.S. Dollar
Notional amounts	7,195	7,334
Not Designated as Hedging Instrument | Japanese Yen / Euro
Notional amounts	249,703	297,730
Not Designated as Hedging Instrument | United Kingdom, Pounds
Notional amounts	7,616	7,074
Not Designated as Hedging Instrument | Japanese Yen / U.S. Dollar
Notional amounts	27,810	37,456
Not Designated as Hedging Instrument | Switzerland, Francs
Notional amounts	12,875	11,944
Not Designated as Hedging Instrument | Swiss Franc / U.S. Dollar
Notional amounts	7,424	9,778
Not Designated as Hedging Instrument | Swedish Kronor / U.S. Dollar
Notional amounts	13,562	18,207
Not Designated as Hedging Instrument | Singapore Dollar / U.S. Dollar
Notional amounts	3,067	1,902
Not Designated as Hedging Instrument | China, Yuan Renminbi
Notional amounts	8,981	9,010
Not Designated as Hedging Instrument | All other
Notional amounts	9,282	5,521
Cash Flow Hedging | Designated as Hedging Instrument
Notional amounts	0	12,396
Cash Flow Hedging | Designated as Hedging Instrument | Japanese Yen / Euro
Notional amounts	0	8,495
Cash Flow Hedging | Designated as Hedging Instrument | Japanese Yen / U.S. Dollar
Notional amounts	0	2,193
Cash Flow Hedging | Designated as Hedging Instrument | Swedish Kronor / U.S. Dollar
Notional amounts	0	1,708
Net Investment Hedging | Designated as Hedging Instrument
Notional amounts	140,492	0
Net Investment Hedging | Designated as Hedging Instrument | Japanese Yen / Euro
Notional amounts	$ 140,492	$ 0