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Employee Pension and Profit Sharing Plans - Schedule of Allocation of Plan Assets (Details) - USD ($)
$ in Thousands
Sep. 29, 2023
Sep. 30, 2022
Oct. 01, 2021
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 157,810 $ 161,504 $ 239,013
Quoted prices in active markets Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 15,608 8,387  
Significant other observable inputs Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 141,273 143,310  
Significant unobservable inputs Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 929 9,807  
Cash and cash equivalents | Quoted prices in active markets Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14,017 6,746  
Investment trusts | Quoted prices in active markets Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,591 1,641  
Investment Funds - Equity | Significant other observable inputs Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14,374 67,035  
Investment Funds - Fixed Income Funds | Significant other observable inputs Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 126,899 76,275  
Real Estate | Significant unobservable inputs Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 929 9,807  
Fair Value Disclosure      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 157,810 161,504  
Fair Value Disclosure | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14,017 6,746  
Fair Value Disclosure | Investment trusts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,591 1,641  
Fair Value Disclosure | Investment Funds - Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14,374 67,035  
Fair Value Disclosure | Investment Funds - Fixed Income Funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 126,899 76,275  
Fair Value Disclosure | Real Estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 929 $ 9,807