CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Oct. 03, 2015	Sep. 27, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (69.1)	$ (9.7)
Other comprehensive income (loss):
Net change in cumulative translation adjustment, net of tax	(10.0)	(18.5)
Net change in available-for-sale investments, net of tax:
Unrealized holding gains (losses) arising during period	81.7	(0.2)
Net change in defined benefit obligation, net of tax:
Amortization of actuarial losses	0.2	0.1
Net change in Accumulated other comprehensive income (loss)	71.9	(18.6)
Comprehensive income (loss)	$ 2.8	$ (28.3)