Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	$ 786,400,000
Other comprehensive income before reclassification	10,200,000
Amounts reclassified out of accumulated other comprehensive loss	400,000
Net change in accumulated other comprehensive loss	10,600,000	$ 6,800,000
Balance at the end of the period	766,300,000
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	(92,400,000)
Balance at the end of the period	(81,800,000)
Unrealized gains (losses) on available-for-sale investments
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	(5,300,000)
Other comprehensive income before reclassification	0
Amounts reclassified out of accumulated other comprehensive loss	0
Net change in accumulated other comprehensive loss	0
Balance at the end of the period	(5,300,000)
Foreign currency translation adjustments
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	(65,300,000)
Other comprehensive income before reclassification	10,200,000
Amounts reclassified out of accumulated other comprehensive loss	0
Net change in accumulated other comprehensive loss	10,200,000
Balance at the end of the period	(55,100,000)
Change in unrealized components of defined benefit obligations, net of tax
Changes in accumulated other comprehensive income (loss) by component
Balance at the beginning of the period	(21,800,000)
Other comprehensive income before reclassification	0
Amounts reclassified out of accumulated other comprehensive loss	400,000
Net change in accumulated other comprehensive loss	400,000
Balance at the end of the period	$ (21,400,000)