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Derivative Instruments (Gains Or Losses Recognized On Interest Rate Swap Derivative Instrument) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2018
Oct. 01, 2017
Oct. 02, 2016
Derivative Instruments, Gain (Loss) [Line Items]      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax $ 18,769 $ 19,768 $ (25,439)
Net loss reclassified to earnings 3,455 5,070 4,048
Interest Rate Swaps [Member] | Derivatives Designated As Hedging Instrument [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax 18,769 19,768 (25,439)
Interest Rate Swaps [Member] | Interest Expense, Net [Member] | Derivatives Designated As Hedging Instrument [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Net loss reclassified to earnings $ 3,455 $ 5,070 $ 4,048