Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	$ 801,000,000.0	$ 764,300,000	$ 711,400,000	$ 725,800,000
Other comprehensive income before reclassification			57,100,000
Amounts reclassified to accumulated other comprehensive loss			2,300,000
Net change in accumulated other comprehensive income (loss)	(4,100,000)	(33,100,000)	59,400,000	(31,000,000.0)
Balance at the end of the period	811,800,000	676,900,000	811,800,000	676,900,000
Tax impact of amortization of actuarial gains (losses)			0
Total
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	(102,400,000)	(132,500,000)	(165,900,000)	(134,600,000)
Net change in accumulated other comprehensive income (loss)	(4,100,000)	(33,100,000)	59,400,000	(31,000,000.0)
Balance at the end of the period	(106,500,000)	$ (165,600,000)	(106,500,000)	$ (165,600,000)
Unrealized losses on available-for sale investments
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period			(5,100,000)
Other comprehensive income before reclassification			0
Amounts reclassified to accumulated other comprehensive loss			0
Net change in accumulated other comprehensive income (loss)			0
Balance at the end of the period	(5,100,000)		(5,100,000)
Foreign  currency translation adjustments, net of tax
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period			(129,600,000)
Other comprehensive income before reclassification			57,100,000
Amounts reclassified to accumulated other comprehensive loss			0
Net change in accumulated other comprehensive income (loss)			57,100,000
Balance at the end of the period	(72,500,000)		(72,500,000)
Change in unrealized components of defined benefit obligations
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period			(31,200,000)
Other comprehensive income before reclassification			0
Amounts reclassified to accumulated other comprehensive loss			2,300,000
Net change in accumulated other comprehensive income (loss)			2,300,000
Balance at the end of the period	$ (28,900,000)		$ (28,900,000)