Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jul. 02, 2022
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	$ 690.8	$ 671.7	$ 763.9
Net change in accumulated other comprehensive (loss) income	(8.0)	20.4	(59.2)
Ending balance	681.6	690.8	671.7
Unrealized actuarial gain	2.8
Income tax effect	0.7
Total
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(136.0)	(156.4)	(97.2)
Other comprehensive loss before reclassification	(8.1)
Amounts reclassified from accumulated other comprehensive loss	0.1
Net change in accumulated other comprehensive (loss) income	(8.0)	20.4	(59.2)
Ending balance	(144.0)	(136.0)	$ (156.4)
Unrealized losses on available-for-sale  investments
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(5.3)
Other comprehensive loss before reclassification	0.0
Amounts reclassified from accumulated other comprehensive loss	0.0
Net change in accumulated other comprehensive (loss) income	0.0
Ending balance	(5.3)	(5.3)
Foreign currency translation adjustments
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(125.4)
Other comprehensive loss before reclassification	(6.0)
Amounts reclassified from accumulated other comprehensive loss	0.0
Net change in accumulated other comprehensive (loss) income	(6.0)
Ending balance	(131.4)	(125.4)
Change in unrealized components of defined benefit obligations, net of tax
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(5.3)
Other comprehensive loss before reclassification	(2.1)
Amounts reclassified from accumulated other comprehensive loss	0.1
Net change in accumulated other comprehensive (loss) income	(2.0)
Ending balance	$ (7.3)	$ (5.3)