Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended
	Oct. 03, 2020	Sep. 28, 2019
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	$ 711,400,000	$ 725,800,000
Other comprehensive income before reclassification	27,600,000
Amounts reclassified to accumulated other comprehensive loss	800,000
Net change in accumulated other comprehensive income (loss)	28,400,000	(26,700,000)
Balance at the end of the period	753,800,000	708,100,000
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	(165,900,000)	(134,600,000)
Net change in accumulated other comprehensive income (loss)	28,400,000	(26,700,000)
Balance at the end of the period	(137,500,000)	$ (161,300,000)
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)
Foreign currency translation adjustments
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	(129,600,000)
Other comprehensive income before reclassification	27,600,000
Amounts reclassified to accumulated other comprehensive loss	0
Net change in accumulated other comprehensive income (loss)	27,600,000
Balance at the end of the period	(102,000,000.0)
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	800,000
Net change in accumulated other comprehensive income (loss)	800,000
Balance at the end of the period	$ (30,400,000)