Pension and Other Post Retirement Benefit Plans - Schedule of Change in Plans' Combined Net Benefit Obligation (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 29, 2023
U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefit obligation at the beginning of the year	$ 296,746	$ 281,852
Service cost	136	119	$ 140
Interest cost	13,621	15,574	15,629
Participants’ contributions	0	0
Actuarial losses (gains)	(2,003)	25,571
Benefits paid	(27,194)	(26,370)
Curtailments/settlements/plan amendments	0	0
Effect of exchange rate changes and other, net	0	0
Net benefit obligation at the end of the year	281,306	296,746	281,852
Non-U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefit obligation at the beginning of the year	1,519,871	1,300,261
Service cost	9,855	8,922	6,926
Interest cost	74,598	71,270	74,077
Participants’ contributions	9	91
Actuarial losses (gains)	(120,367)	65,940
Benefits paid	(93,539)	(77,446)
Curtailments/settlements/plan amendments	(1,214)	(32,496)
Effect of exchange rate changes and other, net	46,584	183,329
Net benefit obligation at the end of the year	$ 1,435,797	$ 1,519,871	$ 1,300,261