Employee Pension and Other Benefit Plans - Net Periodic Benefit Cost (Details) - Pension Benefit Plans - USD ($) $ in Millions	12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021
Components of the net periodic cost for the pension and benefits plans
Service cost	$ 0.0	$ 0.2	$ 0.2
Interest cost	2.7	1.6	1.5
Expected return on plan assets	(1.7)	(1.7)	(1.7)
Recognized net actuarial (gains) losses	(0.1)	2.9	3.1
Net periodic benefit cost	$ 0.9	$ 3.0	$ 3.1