Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	$ 671.7	$ 763.9	$ 633.2
Net change in accumulated other comprehensive income (loss)	20.4	(59.2)	68.7
Ending balance	690.8	671.7	763.9
Unrealized actuarial gain	2.8
Income tax effect	0.8
Total
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(156.4)	(97.2)	(165.9)
Other comprehensive (loss) income before reclassification	20.5
Amounts reclassified from accumulated other comprehensive (loss) income	(0.1)
Net change in accumulated other comprehensive income (loss)	20.4	(59.2)	68.7
Ending balance	(136.0)	(156.4)	$ (97.2)
Unrealized (losses) on available-for-sale  investments
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(5.0)
Other comprehensive (loss) income before reclassification	(0.3)
Amounts reclassified from accumulated other comprehensive (loss) income	0.0
Net change in accumulated other comprehensive income (loss)	(0.3)
Ending balance	(5.3)	(5.0)
Foreign currency translation adjustments
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(144.2)
Other comprehensive (loss) income before reclassification	18.8
Amounts reclassified from accumulated other comprehensive (loss) income	0.0
Net change in accumulated other comprehensive income (loss)	18.8
Ending balance	(125.4)	(144.2)
Change in unrealized components of defined benefit obligations, net of tax
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(7.2)
Other comprehensive (loss) income before reclassification	2.0
Amounts reclassified from accumulated other comprehensive (loss) income	(0.1)
Net change in accumulated other comprehensive income (loss)	1.9
Ending balance	$ (5.3)	$ (7.2)