UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 29, 2019	Dec. 30, 2018
Income Statement [Abstract]
Revenue, net	$ 239.9	$ 280.5	$ 482.7	$ 554.7
Cost of revenue, net	178.0	177.0	346.6	352.9
Gross profit	61.9	103.5	136.1	201.8
Operating expenses:
Research and development	47.3	40.2	91.0	76.5
Sales, general and administrative	52.8	49.2	110.4	93.1
Amortization or impairment of acquisition-related intangibles	3.6	3.9	7.2	7.8
Loss on disposal or impairment of other assets	0.8	0.0	1.8	0.4
Other operating expense	13.8	0.2	21.0	3.2
Operating (loss) income	(56.4)	10.0	(95.3)	20.8
Non-operating (income) expense, net	(5.1)	5.6	(6.7)	15.3
(Loss) income before income taxes	(51.3)	4.4	(88.6)	5.5
Income tax expense	1.2	4.6	1.7	6.5
Net loss from continuing operations	(52.5)	(0.2)	(90.3)	(1.0)
Net loss from discontinued operations	0.0	(2.3)	0.0	(12.6)
Net loss	(52.5)	(2.5)	(90.3)	(13.6)
Net income attributable to noncontrolling interest	0.3	0.0	0.3	0.0
Net loss attributable to controlling interest	$ (52.8)	$ (2.5)	$ (90.6)	$ (13.6)
Basic and diluted loss per share
Continuing operations attributable to controlling interest (USD per share)	$ (0.49)	$ 0	$ (0.84)	$ (0.01)
Net loss attributable to controlling interest (USD per share)	$ (0.49)	$ (0.02)	$ (0.84)	$ (0.13)
Weighted average shares - basic and diluted (shares)	107,925	102,871	107,519	102,396