XML 30 R89.htm IDEA: XBRL DOCUMENT v3.2.0.727
Retirement Plan - Assumptions to Calculate Benefit Obligations and Net Periodic Costs of SERP (Detail) - SERP [Member]
 12 Months Ended
Jun. 25, 2015
Jun. 26, 2014
Jun. 27, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate 4.63% 4.37%  
Rate of compensation increases 4.50% 4.50%  
Bonus payment 60% - 85% of base, paid 4 of 5 years 60% - 85% of base, paid 3 of 5 years  
Discount rate 4.37% 4.90% 4.17%
Rate of compensation increases 4.50% 4.50% 4.50%
Bonus payment 60% - 85% of base, paid 3 of 5 years 60% - 70% of base, paid 3 of 5 years 60% - 70% of base, paid 3 of 5 years