Accumulated Other Comprehensive (Loss) Income (Details) $ in Millions	12 Months Ended
	Jun. 27, 2015 USD ($)
Changes in accumulated other comprehensive (loss) income by component
Beginning balance as of June 28, 2014	$ 11.1
Other comprehensive (loss) income before reclassification	(59.5)
Amounts reclassified from accumulated other comprehensive (loss) income	0.4
Net current-period other comprehensive (loss) income	(59.1)
Ending balance as of June 27, 2015	(48.0)
Tax impact of amortization of actuarial losses	0.0
Unrealized (losses) on available-for-sale investments
Changes in accumulated other comprehensive (loss) income by component
Beginning balance as of June 28, 2014	(2.8)
Other comprehensive (loss) income before reclassification	(0.4)
Net current-period other comprehensive (loss) income	(0.4)
Ending balance as of June 27, 2015	(3.2)
Foreign currency translation adjustments
Changes in accumulated other comprehensive (loss) income by component
Beginning balance as of June 28, 2014	26.2
Other comprehensive (loss) income before reclassification	(55.4)
Net current-period other comprehensive (loss) income	(55.4)
Ending balance as of June 27, 2015	(29.2)
Defined benefit obligation, net of tax
Changes in accumulated other comprehensive (loss) income by component
Beginning balance as of June 28, 2014	(12.3)
Other comprehensive (loss) income before reclassification	(3.7)
Amounts reclassified from accumulated other comprehensive (loss) income	0.4
Net current-period other comprehensive (loss) income	(3.3)
Ending balance as of June 27, 2015	$ (15.6)