Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 24, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-15283
Entity Registrant Name	Dine Brands Global, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-3038279
Entity Address, Address Line One	450 North Brand Boulevard,
Entity Address, City or Town	Glendale,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91203-1903
City Area Code	(818)
Local Phone Number	240-6055
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	DIN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Small Reporting Company	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		16,419,070
Entity Central Index Key	0000049754
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false