Intangible Assets -Schedule of Finite-Lived Intangible Assets by Major Class (Details) - USD ($) $ in Millions	Mar. 29, 2026	Dec. 28, 2025
Finite-Lived Intangible Assets [Line Items]
Gross	$ 245.3	$ 217.0
Accumulated Amortization	(188.2)	(184.4)
Net	57.1	32.6
Tradename
Finite-Lived Intangible Assets [Line Items]
Gross	28.2
Accumulated Amortization	(0.7)
Net	27.5
Franchising Rights
Finite-Lived Intangible Assets [Line Items]
Gross	214.8	214.8
Accumulated Amortization	(186.0)	(183.2)
Net	28.8	31.6
Other
Finite-Lived Intangible Assets [Line Items]
Gross	2.3	2.2
Accumulated Amortization	(1.5)	(1.2)
Net	$ 0.8	$ 1.0