CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
OPERATING ACTIVITIES:
Net loss	$ (294.0)	$ (71.4)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation expense	82.4	78.6
Stock-based compensation	98.3	116.3
Write-off of in-process research and development intangible assets	0.0	11.5
Amortization of acquired intangibles	108.7	98.3
Loss on sales and dispositions of property, plant and equipment	1.2	7.5
Amortization of debt discount and debt issuance costs	13.8	17.9
Amortization of inventory fair value adjustment in connection with acquisitions	8.3	17.8
Other non-cash items	(10.4)	(1.4)
Changes in operating assets and liabilities:
Accounts receivable	37.2	51.0
Inventories	52.5	(80.6)
Operating lease right-of-use assets, net	(0.5)	11.3
Prepayments and other current and non-currents assets	12.1	(8.6)
Income taxes, net	(37.3)	(52.1)
Accounts payable	(82.8)	(44.3)
Accrued payroll and related expenses	(4.9)	(34.6)
Operating lease liabilities	0.4	(10.8)
Accrued expenses and other current and non-current liabilities	4.2	24.2
Net cash provided by (used in) operating activities	(10.8)	130.6
INVESTING ACTIVITIES:
Payments for acquisition of property, plant and equipment	(108.4)	(92.2)
Acquisition of businesses, net of cash acquired	(700.9)	(861.6)
Purchases of short-term investments	(218.7)	(720.8)
Proceeds from maturities and sales of short-term investments	944.4	871.4
Payments for acquisition of intangible assets	(4.0)	0.0
Proceeds from the sales of property, plant and equipment	0.8	0.1
Net cash used in investing activities	(86.8)	(803.1)
FINANCING ACTIVITIES:
Repurchase of common stock	0.0	(35.8)
Payment of 0.25% Convertible Notes due 2024	(323.1)	0.0
Payment of withholding taxes related to net share settlement of restricted stock units	(20.6)	(33.4)
Proceeds from employee stock plans	7.3	6.6
Repayment of term loan	0.0	(5.9)
Net cash used in financing activities	(336.4)	(68.5)
Decrease in cash and cash equivalents	(434.0)	(741.0)
Cash and cash equivalents at beginning of period	859.0	1,290.2
Cash and cash equivalents at end of period	425.0	549.2
Supplemental disclosure of cash flow information:
Cash paid for taxes, net	52.5	66.4
Cash paid for interest	10.4	6.0
Supplemental disclosure of non-cash investing and financing activities:
Settlement of loan to NeoPhotonics	0.0	50.0
Share-based purchase price consideration in connection with the Cloud Light acquisition	23.5	0.0
Right-of-use assets obtained in exchange for new operating lease liabilities	16.0	19.4
Property, Plant and Equipment
Supplemental disclosure of non-cash investing and financing activities:
Unpaid property, plant and equipment/intangible assets in accounts payable and accrued expenses	12.3	10.2
Finite-Lived Intangible Assets
Supplemental disclosure of non-cash investing and financing activities:
Unpaid property, plant and equipment/intangible assets in accounts payable and accrued expenses	$ 1.0	$ 0.0