Lease Disclosures Narrative (Details)	Sep. 30, 2020 properties real_property restaurant_concept
Lessee, Lease, Description [Line Items]
Number of company-operated restaurants located on leased real estate properties | properties	69
Lessor, number of leases requiring additional rent payments based on a percentage of restaurant sales | real_property	115
Lessee, number of leases requiring additional rent payments based on a percentage of restaurant sales | real_property	240
Finance lease, weighted average remaining lease term	9 years
Operating lease, weighted average remaining lease term	7 years 4 months 24 days
Finance lease, weighted average discount rate, percent	10.20%
Operating lease, weighted average discount rate, percent	5.70%
IHOP
Lessee, Lease, Description [Line Items]
Number of franchisee-operated restaurants	600
Number of properties leased	60
Lessee, operating lease, renewal term	5 years
Applebee's
Lessee, Lease, Description [Line Items]
Number of franchisee-operated restaurants	1
Number of properties leased	1
Minimum | IHOP
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	20 years
Minimum | Applebee's
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	10 years
Lessee, operating lease, renewal term	5 years
Maximum | IHOP
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	25 years
Maximum | Applebee's
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	20 years
Lessee, operating lease, renewal term	20 years