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Restaurant Information (Details) - Restaurant	Sep. 30, 2023	Sep. 30, 2022
Franchisor Disclosure
Number of Restaurants	41,198	39,980
Franchised
Franchisor Disclosure
Number of Restaurants	39,054	37,930
Franchised | Conventional franchised
Franchisor Disclosure
Number of Restaurants	21,761	21,641
Franchised | Developmental licensed
Franchisor Disclosure
Number of Restaurants	8,450	8,144
Franchised | Affiliated
Franchisor Disclosure
Number of Restaurants	8,843	8,145
Company-operated
Franchisor Disclosure
Number of Restaurants	2,144	2,050

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