Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021	Sep. 30, 2022
Stock Repurchase Program
Repurchase of common stock (in shares)	7,300,000	14,800,000	3,000,000.0
Repurchases of common stock	$ 84.2	$ 235.5	$ 42.6
Remaining authorized amount for repurchase	$ 234.8	$ 67.3	$ 112.9
Average repurchase price per share (in dollars per share)	$ 11.49	$ 15.91	$ 14.21
Accrued excise tax	$ 0.3
Accumulated Deficit
Stock Repurchase Program
Repurchases of common stock	$ 83.9	$ 235.5	$ 42.6
Common Stock | 2022 Repurchase Plan
Stock Repurchase Program
Authorized amount under stock repurchase program				$ 300.0
Repurchase of common stock (in shares)	6,000,000
Repurchases of common stock	$ 65.2
Remaining authorized amount for repurchase	$ 234.8
Common Stock | 2019 Repurchase Plan
Stock Repurchase Program
Authorized amount under stock repurchase program				$ 200.0
Repurchase of common stock (in shares)	1,300,000
Repurchases of common stock	$ 18.7
Series B Preferred Stock
Stock Repurchase Program
Number of undesignated preferred shares authorized to be issued (in shares)	1,000,000