Leases - Cash Flow Information (Details) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2023	Dec. 25, 2022
Cash (used in) provided by operating activities from continuing operations:
Cash paid for operating leases	$ (5.6)	$ (2.1)
Cash received for tenant allowance on operating lease	0.4	3.1
Cash paid for interest portion of financing leases	(0.1)	(0.1)
Cash used in financing activities:
Cash paid for principal portion of finance leases	$ (0.3)	$ (0.3)