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Derivative Financial Instruments - General Information (Details)
12 Months Ended
Sep. 27, 2020
USD ($)
instrument
Sep. 30, 2018
instrument
agreement
Sep. 29, 2019
USD ($)
instrument
Not designated as hedging instruments      
Derivative financial instruments      
Number of derivative instruments | instrument 0 0 0
Interest rate swap agreements | Designated as cash flow hedges | Derivatives designated as hedging instruments      
Derivative financial instruments      
Number of derivative agreements | agreement   5  
Notional Amount $ 228,100,000    
Fixed Rate 2.79%    
Loss to be reclassified during next twelve months $ 5,800,000    
Period of reclassification from accumulated other comprehensive income to interest expense 12 months    
Interest rate swap agreements | Designated as cash flow hedges | Derivatives designated as hedging instruments | Other current liabilities      
Derivative financial instruments      
Fair value of interest rate swap agreements $ (15,500,000)   $ (10,900,000)
Interest Rate Swap 1 | Designated as cash flow hedges | Derivatives designated as hedging instruments      
Derivative financial instruments      
Notional Amount 45,600,000    
Interest Rate Swap 2 | Designated as cash flow hedges | Derivatives designated as hedging instruments      
Derivative financial instruments      
Notional Amount 45,600,000    
Interest Rate Swap 3 | Designated as cash flow hedges | Derivatives designated as hedging instruments      
Derivative financial instruments      
Notional Amount 45,600,000    
Interest Rate Swap 4 | Designated as cash flow hedges | Derivatives designated as hedging instruments      
Derivative financial instruments      
Notional Amount 45,600,000    
Interest Rate Swap 5 | Designated as cash flow hedges | Derivatives designated as hedging instruments      
Derivative financial instruments      
Notional Amount 45,600,000    
Foreign currency forward contracts and interest rate swap agreements | Derivatives designated as hedging instruments      
Derivative financial instruments      
Ineffective portion 0    
Amounts excluded from effectiveness testing $ 0