Accumulated Other Comprehensive Income (Loss) (Activity and Classification of Derivative Deferral in AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss)
Net actuarial gain (loss) during period	$ 6,544	$ 69,984
Tax effect - Retirement liability	(987)	(24,762)
Net deferral in AOCIL of retirement liability	5,557	45,222
Net deferral in AOCIL of derivatives (effective portion)	(870)	(1,650)
Net gain (loss) - Derivatives	(870)	(1,650)
Tax effect- Derivatives	40	572
Net deferral in AOCIL of derivatives	(830)	(1,078)
Foreign Currency Contracts
Derivative Instruments, Gain (Loss)
Net deferral in AOCIL of derivatives (effective portion)	(2,449)	(2,322)
Net gain (loss) - Derivatives	(2,449)	(2,322)
Interest Rate Swaps
Derivative Instruments, Gain (Loss)
Net deferral in AOCIL of derivatives (effective portion)	1,579	672
Net gain (loss) - Derivatives	$ 1,579	$ 672