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Derivative Instruments (Narrative) (Details)
3 Months Ended 9 Months Ended
Jul. 08, 2018
USD ($)
Jul. 09, 2017
USD ($)
Jul. 08, 2018
USD ($)
Jul. 09, 2017
USD ($)
Jun. 15, 2015
USD ($)
agreements
Apr. 14, 2014
USD ($)
agreements
Derivative [Line Items]            
Interest rate derivatives held | agreements         11 9
Interest Rate Swaps            
Derivative [Line Items]            
Derivative, Notional Amount         $ 200,000,000 $ 300,000,000
Interest rate swaps hedge ineffectiveness $ 0 $ 0 $ 0 $ 0    
Interest Rate Swap 1            
Derivative [Line Items]            
Derivative, Notional Amount         $ 500,000,000