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Stock-Based Compensation (Narrative) (Detail) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Jun. 24, 2015
Jun. 25, 2014
Jun. 26, 2013
Employees And Non-Employee Directors And Consultants [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized   2.0  
Number of shares authorized for issuance 37.3    
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Contractual term of stock option exercises, in years 8 years    
Unrecognized compensation expense $ 2.5    
Period of recognition for unrecognized stock-based compensation costs, in years 1 year 9 months 18 days    
Total intrinsic value of options exercised $ 28.1 $ 25.7 $ 22.4
Tax benefit realized on options exercised 9.2 8.9 8.1
Restricted Share Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense $ 13.7    
Period of recognition for unrecognized stock-based compensation costs, in years 2 years 3 months 14 days    
Fair value of shares that vested during period $ 34.2 $ 42.2 $ 22.0
Minimum [Member] | Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year    
Maximum [Member] | Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years