Leases - Operating lease options (Details) $ in Thousands	9 Months Ended
	Oct. 01, 2019 USD ($) lease	Jan. 01, 2019 USD ($)
Operating Leases
Number of leases executed	5
Initial term of leases, Restaurant locations	20 years
Number of renewal options	2
Renewal term of leases, Restaurant locations	5 years
Number of leases commenced	4
Number of leases that have been executed but have not yet commenced	1
Undiscounted fixed payments | $	$ 1,642,197	$ 938,374
Three Lease Options
Operating Leases
Initial term of leases, Restaurant locations	20 years
Number of renewal options	2
Renewal term of leases, Restaurant locations	5 years
One lease option with term of 10 years
Operating Leases
Initial term of leases, Restaurant locations	10 years
Number of renewal options	4
Renewal term of leases, Restaurant locations	5 years
One lease option with term of 20 years
Operating Leases
Initial term of leases, Restaurant locations	20 years
Undiscounted fixed payments | $	$ 14,100
Leases commenced with term 20 years tenure
Operating Leases
Number of leases commenced	2
Leases commenced with term 30 years tenure
Operating Leases
Number of leases commenced	2