Number of Territories in which Entity Operates

No definition available.

Name:	din_NumberOfTerritoriesInWhichEntityOperates
Namespace Prefix:	din_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Restaurants Refranchised

+ References

No definition available.

+ Details

Name:	din_NumberofRestaurantsRefranchised
Namespace Prefix:	din_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FranchisorDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-18

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of restaurants.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRestaurants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=din_ApplebeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=din_IhopMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FranchisorDisclosureAxis=us-gaap_FranchisedUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=din_FuzzysMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FranchisorDisclosureAxis=us-gaap_EntityOperatedUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Segments - Narrative (Details)	6 Months Ended
Segments - Narrative (Details)	Jun. 30, 2023 segment restaurant country territory	Jun. 30, 2022 restaurant
Franchisor Disclosure [Line Items]
Number of operating segments (segment) \| segment	6
Number of reportable segments (segment) \| segment	4
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	2
Number of countries in which entity operates (country) \| country	13
Franchised Units \| Applebee's
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	1,661
Franchised Units \| IHOP
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	1,790
Franchised Units \| Fuzzy's
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	137
Entity Operated Units \| Applebee's
Franchisor Disclosure [Line Items]
Number of restaurants refranchised (restaurant)		69
Entity Operated Units \| Fuzzy's
Franchisor Disclosure [Line Items]
Number of restaurants (restaurant)	3
Number of restaurants refranchised (restaurant)	2