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Pension and Other Postretirement Benefit Plans - Schedule of Significant Actuarial Assumptions in Determining the Funded Status and Benefit Cost (Details)
12 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Discount rates     3.50%
Rates of compensation increases 3.50% 3.50% 0.00%
Return on Assets     7.50%
U.S. Plans | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rates 4.00% 3.90%  
Return on Assets 5.80% 5.80%  
U.S. Plans | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rates 4.20% 4.20%  
Return on Assets 5.90% 5.90%  
Non-U.S. Plans | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rates 1.30% 1.30% 1.30%
Rates of compensation increases 2.50% 3.80% 5.50%
Return on Assets 2.90% 3.80% 5.30%
Non-U.S. Plans | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rates 8.10% 8.10% 7.00%
Rates of compensation increases 7.50% 7.50% 7.50%
Return on Assets 7.50% 7.50% 8.50%