Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 27, 2026	Jun. 28, 2025	Jun. 29, 2024
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	$ 780.2	$ 681.6	$ 690.8
Other comprehensive (loss) income before reclassification	(6.4)
Amounts reclassified from accumulated other comprehensive loss	0.2
Net change in accumulated other comprehensive (loss) income	(6.2)	34.2	(8.0)
Ending balance	1,448.5	780.2	681.6
OCI, before reclassifications, before tax, attributable to parent	1.4
Other comprehensive income (loss) before reclassifications, tax	0.4
Total
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(109.8)	(144.0)	(136.0)
Net change in accumulated other comprehensive (loss) income	(6.2)	34.2	(8.0)
Ending balance	(116.0)	(109.8)	$ (144.0)
Unrealized losses on available-for-sale investments
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(5.3)
Other comprehensive (loss) income 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	(97.5)
Other comprehensive (loss) income before reclassification	(7.4)
Amounts reclassified from accumulated other comprehensive loss	0.0
Net change in accumulated other comprehensive (loss) income	(7.4)
Ending balance	(104.9)	(97.5)
Change in unrealized components of defined benefit obligations, net of tax
Changes in accumulated other comprehensive income (loss) by component
Beginning balance	(7.0)
Other comprehensive (loss) income before reclassification	1.0
Amounts reclassified from accumulated other comprehensive loss	0.2
Net change in accumulated other comprehensive (loss) income	1.2
Ending balance	$ (5.8)	$ (7.0)

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