Segments - Narrative (Details)	3 Months Ended
	Mar. 31, 2018 Restaurant Country segment Territory
Franchisor Disclosure [Line Items]
Number of segments (segment) | segment	4
Number of restaurants (restaurant)	3,700
Applebee's
Franchisor Disclosure [Line Items]
Number of territories in which entity operates (territory) | Territory	2
Number of countries in which entity operates (country) | Country	15
IHOP
Franchisor Disclosure [Line Items]
Number of territories in which entity operates (territory) | Territory	3
Number of countries in which entity operates (country) | Country	12
Cincinnati, Ohio market area restaurants
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	10
Number of restaurants Not refranchised (restaurants)	1
Franchised Units
Franchisor Disclosure [Line Items]
Number of restaurants refranchised (restaurant)	9
Franchised Units | Applebee's
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	1,912
Franchised Units | IHOP
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	1,791
Franchised Units | Cincinnati, Ohio market area restaurants
Franchisor Disclosure [Line Items]
Number of restaurants refranchised (restaurant)	9