CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (4.8)	$ (10.7)	$ (7.1)	$ (19.4)
Other comprehensive income:
Net change in cumulative translation adjustment, net of tax	11.6	19.5	(14.5)	36.7
Net change in available-for-sale investments, net of tax:
Unrealized holding gain (loss) arising during period	0.1	(0.2)	0.3	(0.6)
Plus: reclassification adjustments included in net loss	0.0	0.1	0.4	0.1
Net change in defined benefit obligation, net of tax:
Amortization of actuarial losses	0.5	0.3	1.5	1.2
Net change in accumulated other comprehensive income (loss)	12.2	19.7	(12.3)	37.4
Comprehensive income (loss)	$ 7.4	$ 9.0	$ (19.4)	$ 18.0