Consolidated Statements of Shareholders' Deficit (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance at Jun. 29, 2022	$ (268.1)	$ 7.0	$ 690.9	$ (148.4)	$ (812.3)	$ (5.3)
Net income (loss)	(30.2)	0.0	0.0	(30.2)	0.0	0.0
Other comprehensive income (loss)	(1.0)	0.0	0.0	0.0	0.0	(1.0)
Stock-based compensation	4.7	0.0	4.7	0.0	0.0	0.0
Purchases of treasury stock	(2.0)	0.0	0.2	0.0	(2.2)	0.0
Issuances of treasury stock	0.0	0.0	(7.8)	0.0	7.8	0.0
Retirement of stock	0.0	(1.0)	0.0	(306.1)	307.1	0.0
Ending balance at Sep. 28, 2022	(296.6)	6.0	688.0	(484.7)	(499.6)	(6.3)
Beginning balance at Jun. 29, 2022	(268.1)	7.0	690.9	(148.4)	(812.3)	(5.3)
Net income (loss)	(2.3)
Other comprehensive income (loss)	(0.9)
Ending balance at Dec. 28, 2022	(267.5)	6.0	688.7	(456.8)	(499.2)	(6.2)
Beginning balance at Sep. 28, 2022	(296.6)	6.0	688.0	(484.7)	(499.6)	(6.3)
Net income (loss)	27.9	0.0	0.0	27.9	0.0	0.0
Other comprehensive income (loss)	0.1	0.0	0.0	0.0	0.0	0.1
Stock-based compensation	1.2	0.0	1.2	0.0	0.0	0.0
Purchases of treasury stock	(0.1)	0.0	0.0	0.0	(0.1)	0.0
Issuances of treasury stock	0.0	0.0	(0.5)	0.0	0.5	0.0
Ending balance at Dec. 28, 2022	(267.5)	6.0	688.7	(456.8)	(499.2)	(6.2)
Beginning balance at Jun. 28, 2023	(144.3)	6.0	690.0	(351.9)	(482.4)	(6.0)
Net income (loss)	7.2	0.0	0.0	7.2	0.0	0.0
Other comprehensive income (loss)	(0.2)	0.0	0.0	0.0	0.0	(0.2)
Stock-based compensation	5.7	0.0	5.7	0.0	0.0	0.0
Purchases of treasury stock	(24.7)	0.0	(0.2)	0.0	(24.5)	0.0
Issuances of treasury stock	0.0	0.0	(11.7)	0.0	11.7	0.0
Ending balance at Sep. 27, 2023	(156.3)	6.0	683.8	(344.7)	(495.2)	(6.2)
Beginning balance at Jun. 28, 2023	(144.3)	6.0	690.0	(351.9)	(482.4)	(6.0)
Net income (loss)	49.3
Other comprehensive income (loss)	0.0
Ending balance at Dec. 27, 2023	(109.5)	6.0	687.0	(302.6)	(493.9)	(6.0)
Beginning balance at Sep. 27, 2023	(156.3)	6.0	683.8	(344.7)	(495.2)	(6.2)
Net income (loss)	42.1	0.0	0.0	42.1	0.0	0.0
Other comprehensive income (loss)	0.2	0.0	0.0	0.0	0.0	0.2
Stock-based compensation	4.4	0.0	4.4	0.0	0.0	0.0
Purchases of treasury stock	(0.4)	0.0	(0.1)	0.0	(0.3)	0.0
Issuances of treasury stock	0.5	0.0	(1.1)	0.0	1.6	0.0
Ending balance at Dec. 27, 2023	$ (109.5)	$ 6.0	$ 687.0	$ (302.6)	$ (493.9)	$ (6.0)