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Income Taxes - Reconciliations of Income Taxes at Statutory Federal Income Tax Rate (Detail)
12 Months Ended
Jun. 29, 2017
Jun. 30, 2016
Jun. 25, 2015
Income Tax Disclosure [Abstract]      
Federal statutory income tax rate 35.00% 35.00% 35.00%
State income taxes, net of federal benefit 3.30% 3.20% 3.40%
Research and development tax credit (0.10%) (0.10%) (0.10%)
Domestic manufacturing deduction (3.10%) (3.20%) (3.40%)
Windfall tax benefits (1.80%)    
Uncertain tax positions 0.10% (0.60%) 0.30%
Other (0.10%) 0.30% (0.50%)
Effective tax rate 33.30% 34.60% 34.70%