CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
OPERATING ACTIVITIES:
Net income (loss)	$ (102.5)	$ 9.3	$ (3.4)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation expense	54.2	47.4	43.0
Stock-based compensation	32.7	24.9	18.2
Unrealized loss on derivative liability	104.2	0.6	0.0
Amortization of acquired technologies and other intangibles	6.8	7.2	8.0
Disposal of property, plant and equipment	0.2	0.6	(1.2)
Other non-cash (income) expenses	0.0	0.0	(0.9)
Excess tax benefit associated with stock-based compensation	(3.8)	0.0	0.0
Amortization of discount on 0.25% Convertible Senior Notes due 2024	5.1	0.0	0.0
Changes in operating assets and liabilities:
Accounts receivable	4.2	(21.8)	(17.8)
Inventories	(41.7)	(3.1)	(6.2)
Prepayments and other current and non-currents assets	(7.4)	(12.7)	(14.5)
Deferred taxes, net	26.8	(1.7)	1.9
Accounts payable	(16.9)	28.9	1.0
Accrued payroll and related expenses	1.0	9.2	(1.0)
Income taxes payable	15.9	(1.7)	(10.8)
Accrued expenses and other current and non-current liabilities	6.2	(0.5)	(6.9)
Net cash provided by operating activities	85.0	86.6	9.4
INVESTING ACTIVITIES:
Purchase of property, plant and equipment	(138.1)	(82.0)	(53.7)
Acquisition of business, net of cash acquired	(5.1)	0.0	0.0
Purchases of short-term investments	(290.7)	0.0	0.0
Proceeds from maturities and sales of short-term investments	8.2	0.0	0.0
Proceeds from the sales of property and equipment	0.0	0.0	0.2
Net cash used in investing activities	(425.7)	(82.0)	(53.5)
FINANCING ACTIVITIES:
Net transfers from (to) Viavi	0.0	134.2	40.6
Proceeds from the issuance of 0.25% Convertible Senior Notes due 2024, net of issuance costs	442.3	0.0	0.0
Excess tax benefit associated with stock-based compensation	3.8	0.0	0.0
Payment of dividends - preferred stock	(0.9)	(0.5)	0.0
Payment of financing obligation related to acquisition	0.0	(2.3)	0.0
Proceeds from employee stock plans	8.1	3.1	0.0
Proceeds from the exercise of stock options	3.4	1.9	0.0
Net cash provided by financing activities	456.7	136.4	40.6
Effect of exchange rates on cash and cash equivalents	(0.2)	1.6	(1.9)
Increase (decrease) in cash and cash equivalents	115.8	142.6	(5.4)
Cash and cash equivalents at beginning of period	157.1	14.5	19.9
Cash and cash equivalents at end of period	272.9	157.1	$ 14.5
Supplemental disclosure of cash flow information
Income taxes paid	9.5	2.7
Purchases of property, plant, and equipment	$ 18.4	13.1
Recognition of the redemption value of the convertible preferred stock		9.7
Accretion of equity issuance costs		$ 2.0