Description of Business and Basis of Presentation (Narrative) (Details) $ in Millions	6 Months Ended	12 Months Ended
	Sep. 23, 2023 USD ($) store segment item state	Mar. 30, 2024	Mar. 25, 2023 USD ($)
Significant Accounting Policies [Line Items]
Company operated retail stores | store	1,298
Number of states in which entity operates | state	32
Number of franchised locations | item	77
Number of operating segments | segment	1
Fiscal period duration			364 days
Property and equipment accumulated depreciation | $	$ 434.6		$ 426.7
Forecast [Member]
Significant Accounting Policies [Line Items]
Fiscal period duration		371 days
Minimum [Member]
Significant Accounting Policies [Line Items]
Fiscal period duration	364 days
Maximum [Member]
Significant Accounting Policies [Line Items]
Fiscal period duration	371 days