Leases - Narrative (Details) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 29, 2021 USD ($) lease	Mar. 30, 2021 lease	Jun. 30, 2020 USD ($)	Jun. 29, 2021 USD ($)	Jun. 30, 2020 USD ($)
Leases [Abstract]
Sublease income	$ 0.5		$ 0.1	$ 0.9	$ 0.5
Rent deferred for executed lease amendments			4.0		$ 4.0
Number of restaurant lease assets impaired | lease	0	1
Asset impairment charge for certain operating leases			$ 0.3