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Pension and Other Postretirement Benefit Plans - Schedule of Pension Plans Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Reclassification adjustments:
Total	$ 139,218	$ 34,129	$ (99,047)
U.S. Plans
Arising during the period:
Net actuarial (gain) loss	36,108	(7,514)	(11,372)
Reclassification adjustments:
Net actuarial losses	(2,282)	(2,913)	(2,431)
Total	33,826	(10,427)	(13,803)
Non-U.S. Plans
Arising during the period:
Net actuarial (gain) loss	83,368	59,827	(76,860)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) On Sale of Business, after Tax	(12,520)	0	0
Prior service cost (benefit)	29,829	215	119
Total	100,677	60,042	(76,741)
Reclassification adjustments:
Net actuarial losses	(6,546)	(5,507)	(8,732)
Prior service cost	(1,075)	181	229
Total	(7,621)	(5,326)	(8,503)
Total	$ 93,056	$ 54,716	$ (85,244)

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Other comprehensive income defined benefit plan net of tax.

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Pension plan amounts recognized in accumulated other comprehensive income loss arising during period.

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Pension plan amounts recognized in accumulated other comprehensive income loss reclassification adjustments.

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Amount, after tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, after tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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