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Nature Of Operations And Summary Of Significant Accounting Policies (Fair Value Assumptions Using Black-Scholes Option-Pricing Model) (Detail)
12 Months Ended
Jun. 28, 2017
Jun. 29, 2016
Jun. 24, 2015
Disclosure Nature Of Operations And Summary Of Significant Accounting Policies Narrative [Abstract]      
Expected volatility 25.50% 27.50% 31.00%
Risk-free interest rate 1.30% 1.50% 1.60%
Expected lives 5 years 5 years 5 years
Dividend yield 2.60% 2.40% 2.20%