Restaurant Impairments, Closure Costs and Asset Disposals - Narrative (Details) - restaurant	3 Months Ended		6 Months Ended
	Jun. 29, 2021	Jun. 30, 2020	Jun. 29, 2021	Jun. 30, 2020
Property, Plant and Equipment Impairment or Disposal [Abstract]
Number of restaurants impaired	0	5	1	5
Number of restaurants closed			6	1