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Pension and Other Postretirement Benefit Plans - Schedule of Contribution to Multiemployer Pension Plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 02, 2020
Sep. 27, 2019
Sep. 28, 2018
U.S. Plans      
Multiemployer Plans [Line Items]      
Contributions to multiemployer pension plans $ 8,559 $ 33,187 $ 56,567
Canada | Non-U.S. Plans      
Multiemployer Plans [Line Items]      
Contributions to multiemployer pension plans 0 16,625 36,354
Europe | Non-U.S. Plans      
Multiemployer Plans [Line Items]      
Contributions to multiemployer pension plans 1,922 9,413 10,677
United States | U.S. Plans      
Multiemployer Plans [Line Items]      
Contributions to multiemployer pension plans $ 6,637 $ 7,149 $ 9,536