Pension and Other Post Retirement Benefit Plans - Schedule of Components of Net Periodic Pension Cost (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 29, 2023
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 136	$ 119	$ 140
Interest cost	13,621	15,574	15,629
Expected return on plan assets	(17,243)	(19,058)	(19,496)
Actuarial losses (gains)	1,482	(1,384)	(1,770)
Prior service cost	63	431	430
Total net periodic pension cost recognized	(1,941)	(4,318)	(5,067)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	9,855	8,922	6,926
Interest cost	74,598	71,270	74,077
Expected return on plan assets	(89,279)	(76,510)	(73,387)
Actuarial losses (gains)	10,250	7,320	6,317
Prior service cost	1,608	1,501	1,424
Net pension cost, before special items	7,032	12,503	15,357
Curtailment expense/Settlement gains	(9)	258	208
Total net periodic pension cost recognized	$ 7,023	$ 12,761	$ 15,565