Leases Lessee Lease Narrative (Details)	Jun. 30, 2019 number_of_restaurants
Lessee, Lease, Description
Number of restaurants	6,719
Minimum
Lessee, Lease, Description
Lessee, operating lease, term of contract	15 years
Maximum
Lessee, Lease, Description
Lessee, operating lease, term of contract	20 years
Entity Operated Units
Lessee, Lease, Description
Number of restaurants	358
Land And Building - Company Owned | Entity Operated Units
Lessee, Lease, Description
Number of restaurants	144
Building - Company Owned; Land - Leased | Entity Operated Units
Lessee, Lease, Description
Number of restaurants	144
Land And Building - Leased | Entity Operated Units
Lessee, Lease, Description
Number of restaurants	70