Pension and Other Postretirement Benefit Plans - Schedule of Pension Plans Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Reclassification adjustments:
Total	$ 61,977	$ 139,218	$ 34,129
U.S. Plans
Arising during the period:
Net actuarial (gain) loss	(900)	36,108	(7,514)
Prior service cost (benefit)	1,589	0	0
Total	689	36,108	(7,514)
Reclassification adjustments:
Net actuarial losses	(2,653)	(2,282)	(2,913)
Prior service cost	(244)	0	0
Total	(2,897)	(2,282)	(2,913)
Total	(2,208)	33,826	(10,427)
Non-U.S. Plans
Arising during the period:
Net actuarial (gain) loss	71,676	83,368	59,827
Net (gain) loss on Sale of ECR	0	(12,520)	0
Prior service cost (benefit)	0	29,829	215
Total	71,676	100,677	60,042
Reclassification adjustments:
Net actuarial losses	(6,322)	(6,546)	(5,507)
Prior service cost	(1,169)	(1,075)	181
Total	(7,491)	(7,621)	(5,326)
Total	$ 64,185	$ 93,056	$ 54,716