Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 30, 2024	Apr. 01, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period			$ 1,636,087
Other comprehensive income (loss), net of tax	$ (11,353)	$ 14,656	21,656	$ 68,509
End of period	1,753,259	1,579,777	1,753,259	1,579,777
Accumulated foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period			(140,486)
OCI before reclassifications			17,298
Amounts reclassified from AOCIL			(11)
Other comprehensive income (loss), net of tax			17,287
End of period	(123,199)		(123,199)
Accumulated retirement liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period			(113,605)
OCI before reclassifications			(238)
Amounts reclassified from AOCIL			4,089
Other comprehensive income (loss), net of tax			3,851
End of period	(109,754)		(109,754)
Accumulated gain (loss) on derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period			(518)
OCI before reclassifications			69
Amounts reclassified from AOCIL			449
Other comprehensive income (loss), net of tax			518
End of period	0		0
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(221,600)	(257,189)	(254,609)	(311,042)
OCI before reclassifications			17,129
Amounts reclassified from AOCIL			4,527
Other comprehensive income (loss), net of tax	(11,353)	14,656	21,656	68,509
End of period	$ (232,953)	$ (242,533)	$ (232,953)	$ (242,533)