Lease Disclosures - Narrative (Details)	Sep. 30, 2021 restaurant lease
Lessee, Lease, Description [Line Items]
Number of company-operated restaurants located on leased real estate properties	69
Lessor, number of leases requiring additional rent payments based on a percentage of restaurant sales | lease	280
Lessee, number of leases requiring additional rent payments based on a percentage of restaurant sales | lease	45
Finance lease, weighted average remaining lease term	9 years 6 months
Operating lease, weighted average remaining lease term	6 years 10 months 24 days
Finance lease, weighted average discount rate, percent	10.10%
Operating lease, weighted average discount rate, percent	5.60%
IHOP
Lessee, Lease, Description [Line Items]
Number of franchisee-operated restaurants	540
Number of properties leased	55
Lessee, operating lease, renewal term	5 years
IHOP | Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	20 years
IHOP | Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	25 years
Applebee's
Lessee, Lease, Description [Line Items]
Number of franchisee-operated restaurants	1
Number of properties leased	1
Applebee's | Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	10 years
Lessee, operating lease, renewal term	5 years
Applebee's | Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	20 years
Lessee, operating lease, renewal term	20 years