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Derivative Financial Instruments General Information (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 29, 2013
item
Mar. 27, 2016
USD ($)
item
Sep. 27, 2015
USD ($)
item
Sep. 29, 2013
item
Derivative financial instruments        
Notional Amount   $ 187.1    
Weighted average fixed rate   1.32%    
Not designated as hedging instruments        
Derivative financial instruments        
Number of derivative instruments | item   0 0  
Interest rate swap agreements | Derivatives designated as hedging instruments        
Derivative financial instruments        
Amounts excluded from effectiveness testing   $ 0.0 $ 0.0  
Interest rate swap agreements | Designated as cash flow hedges | Derivatives designated as hedging instruments        
Derivative financial instruments        
Number of derivative agreements | item 2     3
Amount of effective portion of derivatives before tax effect   $ 1.8    
Period of reclassification from accumulated other comprehensive loss to interest expense   12 months