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Derivative Instruments - Location of (Gain) Loss Reclassified from AOCI Into Earnings (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 02, 2021
Mar. 27, 2020
Apr. 02, 2021
Mar. 27, 2020
Derivative instruments        
Gain (loss) recognized in income $ 7,843 $ 16,046 $ 19,669 $ 14,346
Not Designated as Hedging Instrument        
Derivative instruments        
Gain (loss) recognized in income (4,391) 12,873 (6,130) 8,973
Not Designated as Hedging Instrument | Gasoline and diesel fuel agreements        
Derivative instruments        
Gain (loss) recognized in income (2,200) 12,100 (5,800) 9,000
Not Designated as Hedging Instrument | Interest Expense | Foreign currency forward exchange contracts        
Derivative instruments        
Gain (loss) recognized in income (505) 170 (103) 68
Not Designated as Hedging Instrument | Cost of Services Provided and Selling and General Corporate Expenses | Gasoline and diesel fuel agreements        
Derivative instruments        
Gain (loss) recognized in income (3,886) 12,703 (6,027) 8,905
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate swap agreements        
Derivative instruments        
Gain (loss) recognized in income (12,169) 92,256 (10,927) 85,330
Cash Flow Hedging | Designated as Hedging Instrument | Interest Expense | Interest rate swap agreements        
Derivative instruments        
Gain (Loss), reclassification, before tax $ 12,234 $ 3,173 $ 25,799 $ 5,373