Derivative Financial Instruments - Fair Value of Outstanding Derivatives (Details) - Interest rate swap agreements - Derivatives designated as hedging instruments - Designated as cash flow hedges - USD ($) $ in Thousands	Sep. 29, 2019	Sep. 30, 2018
Other long-term assets
Derivative financial instruments
Fair Value of Derivative Asset	$ 0	$ 1,244
Other current liabilities
Derivative financial instruments
Fair Value of Derivative Asset	$ 11,009	$ 0