Accumulated Other Comprehensive Income (Loss) (Effective Portion of Amounts Deferred in AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2023	Oct. 01, 2022
Derivative Instruments, Gain (Loss)
Net actuarial gain (loss) during period	$ (8,432)	$ 15,521
Tax effect - Retirement liability	1,716	(1,676)
Net deferral in AOCIL of retirement liability	(6,716)	13,845
Net deferral in AOCIL of derivatives (effective portion)	1,319	(5,190)
Tax effect - Derivatives	(298)	1,159
Net deferral in AOCIL of derivatives	1,021	(4,031)
Foreign currency contracts
Derivative Instruments, Gain (Loss)
Net deferral in AOCIL of derivatives (effective portion)	$ 1,319	$ (5,190)

Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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