Derivative Instruments and Hedging Activities (Pretax Amounts Recognized In Accumulated Other Comprehensive Income On Currency Contracts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net (gain) loss reclassified to earnings	$ (2,905)
Net gain (loss) recognized in OCI	(2,141)
Currency exchange contracts gain (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning unrealized net gain (loss) in AOCI	672	$ (443)
Net (gain) loss reclassified to earnings	(1,026)	399
Net gain (loss) recognized in OCI	920	716
Ending unrealized net gain (loss) in AOCI	566	672
Interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning unrealized net gain (loss) in AOCI	7,411	3,499
Net (gain) loss reclassified to earnings	(2,689)	(1,204)
Net gain (loss) recognized in OCI	(3,643)	5,116
Ending unrealized net gain (loss) in AOCI	$ 1,079	$ 7,411