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Closure and Impairment Charges - Narrative (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
restaurant
lease
Sep. 30, 2022
USD ($)
restaurant
Sep. 30, 2023
USD ($)
restaurant
lease
Sep. 30, 2022
USD ($)
restaurant
Goodwill [Line Items]        
Long-lived tangible asset impairment | $ $ 1.5 $ 1.1 $ 2.0 $ 1.4
IHOP        
Goodwill [Line Items]        
Number of restaurants related to prior period closure charge revisions 30 35 30 40
IHOP | Entity Operated Units        
Goodwill [Line Items]        
Number of master land and building leases subject to asset impairment | lease 4   4  
Number of restaurants subject to asset impairment       2
Applebee's | Entity Operated Units        
Goodwill [Line Items]        
Long-lived tangible asset impairment | $       $ 1.1
Applebee's | Entity Operated Units | Applebee's Company-Operated Restaurants, North Carolina And South Carolina        
Goodwill [Line Items]        
Number of restaurants subject to refranchising and sale   69   69