Derivative Instruments and Hedging Activities (Reconciliation Of The Net Fair Value Of Foreign Exchange Cash Flow Hedge Assets And Liabilities) (Details) - Currency exchange contracts gain (loss) - USD ($) $ in Thousands	Dec. 30, 2017	Sep. 30, 2017
Offsetting Derivative Assets [Abstract]
Gross Recognized Amount	$ 5,178	$ 3,572
Gross Offset Amount	0	0
Net Amount Presented	5,178	3,572
Derivatives Subject to Offset	(235)	(210)
Cash Collateral Received	0	0
Net Amount	4,943	3,362
Offsetting Derivative Liabilities [Abstract]
Gross Recognized Amount	520	551
Gross Offset Amount	0	0
Net Amount Presented	520	551
Derivatives Subject to Offset	(235)	(210)
Cash Collateral Received	0	0
Net Amount	$ 285	$ 341