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Retirement and Deferred Compensation Plans - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 24, 2012
Jun. 26, 2011
Jun. 27, 2010
Employee Benefit Plan [Line Items]      
Employer contribution matching percentage 50.00%    
Maximum employee contributions matched by the Company 6.00%    
Defined benefit plan, contribution by employer $ 5.8 $ 5.1 $ 4.3
Deferred compensation, term 20 years    
Liabilities of Company to plan participants 79.0 62.5  
Assets correlated to the deferred compensation obligation 83.2 64.7  
Defined benefit obligations $ 19.8 $ 13.6  
Minimum
     
Employee Benefit Plan [Line Items]      
Employee 401K contribution 1.00%    
Payment of benefits, duration after opening of a deferral subaccount or upon retirement 3 years    
Maximum
     
Employee Benefit Plan [Line Items]      
Employee 401K contribution 75.00%