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Restaurant Information (Detail)
Jun. 30, 2011
Store
Jun. 30, 2010
Store
Segment Reporting Disclosure [Line Items]    
Number of Restaurants 32,943 32,466
Franchised
   
Segment Reporting Disclosure [Line Items]    
Number of Restaurants 26,598 26,209
Franchised | Conventional franchised
   
Segment Reporting Disclosure [Line Items]    
Number of Restaurants 19,279 19,059
Franchised | Developmental licensed
   
Segment Reporting Disclosure [Line Items]    
Number of Restaurants 3,748 3,327
Franchised | Foreign affiliated
   
Segment Reporting Disclosure [Line Items]    
Number of Restaurants 3,571 3,823
Company-operated
   
Segment Reporting Disclosure [Line Items]    
Number of Restaurants 6,345 6,257