Segments - Narrative (Details)	6 Months Ended
	Jun. 30, 2019 Country Territory Restaurant segment
Franchisor Disclosure [Line Items]
Number of segments (segment) | segment	5
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	13
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
Franchised Units | Applebee's
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant) | Restaurant	1,746
Franchised Units | IHOP
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant) | Restaurant	1,828