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Investments (Schedule of Investment Securities, Aggregated by Investment Type and Length of Time) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jun. 30, 2013
Jun. 24, 2012
Jun. 26, 2011
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months $ 234,470 $ 65,209  
Unrealized Loss, Less than 12 Months (3,098) (191)  
Fair Value, Greater than 12 Months 0 0  
Unrealized Loss, Greater than 12 Months 0 0  
Fair Value, Total 234,470 65,209  
Unrealized Loss, Total (3,098) (191)  
Number of securities with an unrealized loss, Less than 12 Months 123 33  
Number of securities with an unrealized loss, Greater than 12 Months 0 0  
Number of securities with an unrealized loss, Total 123 33  
Available-for-sale Securities, Gross Realized Gain (Loss) 111 994 1
Municipal Bonds [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 126,926 30,102  
Unrealized Loss, Less than 12 Months (1,314) (58)  
Fair Value, Greater than 12 Months 0 0  
Unrealized Loss, Greater than 12 Months 0 0  
Fair Value, Total 126,926 30,102  
Unrealized Loss, Total (1,314) (58)  
Corporate Bonds [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 102,010 30,550  
Unrealized Loss, Less than 12 Months (1,765) (123)  
Fair Value, Greater than 12 Months 0 0  
Unrealized Loss, Greater than 12 Months 0 0  
Fair Value, Total 102,010 30,550  
Unrealized Loss, Total (1,765) (123)  
U.S. Agency Securities [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 0 3,014  
Unrealized Loss, Less than 12 Months 0 (7)  
Fair Value, Greater than 12 Months 0 0  
Unrealized Loss, Greater than 12 Months 0 0  
Fair Value, Total 0 3,014  
Unrealized Loss, Total 0 (7)  
Non-U.S. certificates of deposit [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 0 0  
Unrealized Loss, Less than 12 Months 0 0  
Fair Value, Greater than 12 Months 0 0  
Unrealized Loss, Greater than 12 Months 0 0  
Fair Value, Total 0 0  
Unrealized Loss, Total 0 0  
Non-U.S. Government Securities [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 5,534 1,543  
Unrealized Loss, Less than 12 Months (19) (3)  
Fair Value, Greater than 12 Months 0 0  
Unrealized Loss, Greater than 12 Months 0 0  
Fair Value, Total 5,534 1,543  
Unrealized Loss, Total $ (19) $ (3)