Accumulated Other Comprehensive Income (Loss) (Reclassification from AOCIL) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)
Prior service cost	$ 81	$ 108
Actuarial losses	37,831	28,196
Curtailment	(150)	0
Reclassification from AOCIL into earnings - Retirement liability	37,762	28,304
Tax effect - Retirement liability	(13,755)	(10,394)
Net reclassification from AOCIL into earnings - Retirement Liability	24,007	17,910
Reclassification from AOCIL into earnings - Derivatives	5,426	3,656
Tax effect - Derivatives	(1,467)	(733)
Net reclassification from AOCIL into earnings - Derivatives	3,959	2,923
Foreign Currency Contracts | Sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)
Derivatives Gain (Loss) Reclassified from AOCIL into earnings	3,190	1,287
Foreign Currency Contracts | Cost of Sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)
Derivatives Gain (Loss) Reclassified from AOCIL into earnings	2,032	1,598
Interest Rate Swaps | Interest Expense
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)
Derivatives Gain (Loss) Reclassified from AOCIL into earnings	$ 204	$ 771