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Contingencies (Narrative) (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 23, 2015
Jun. 29, 2016
Jun. 24, 2015
Guarantor Obligations [Line Items]      
Description of material contingencies   No material liabilities have been recorded as of June 29, 2016  
Letters of Credit Outstanding, Amount   $ 28.1  
Lease Guarantees And Secondary Obligations [Member]      
Guarantor Obligations [Line Items]      
Loss Contingency, Range of Possible Loss, Maximum, Change During Period $ (19.0)    
Maximum [Member] | Lease Guarantees And Secondary Obligations [Member]      
Guarantor Obligations [Line Items]      
Loss Contingency, Estimate of Possible Loss   $ 72.9 $ 98.9