Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	$ 1,400,144
Other comprehensive income (loss), net of tax	(2,335)	$ 35,191
End of period	1,424,423	1,303,244
Accumulated foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(92,989)
OCI before reclassifications	(6,510)
Amounts reclassified from AOCIL	(50)
Other comprehensive income (loss), net of tax	(6,560)
End of period	(99,549)
Accumulated retirement liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(153,210)
OCI before reclassifications	568
Amounts reclassified from AOCIL	3,522
Other comprehensive income (loss), net of tax	4,090
End of period	(149,120)
Accumulated gain (loss) on derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(1,361)
OCI before reclassifications	41
Amounts reclassified from AOCIL	94
Other comprehensive income (loss), net of tax	135
End of period	(1,226)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(247,560)	(285,453)
OCI before reclassifications	(5,901)
Amounts reclassified from AOCIL	3,566
Other comprehensive income (loss), net of tax	(2,335)	35,191
End of period	$ (249,895)	$ (250,262)