Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities
Net Earnings (Loss)	$ (67,029)	$ 107,517	$ 88,002
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	156,690	75,745	66,202
Amortization	64,192	16,620	14,568
Share-based compensation expense	68,480	21,946	15,312
Amortization of discount on convertible debt and debt issuance costs	22,150	12,550	10,057
Debt extinguishment expense	3,960	0	0
Gains on disposals of property, plant and equipment	(1,461)	0	0
Losses on foreign currency remeasurements and transactions	14,442	3,155	850
Earnings from equity investments	(2,775)	(3,214)	(3,594)
Deferred income taxes	(42,454)	(10,462)	945
Impairment of investment	4,980	0	0
Increase (decrease) in cash from changes in (net of effects of acquisitions):
Accounts receivable	(91,981)	(50,764)	(21,044)
Inventories	112,572	(36,392)	(38,732)
Accounts payable	45,026	15,999	17,436
Income taxes	40,061	366	7,380
Other operating net assets	(29,561)	25,409	3,632
Net cash provided by operating activities	297,292	178,475	161,014
Cash Flows from Investing Activities
Additions to property, plant & equipment	(136,877)	(137,122)	(153,438)
Purchases of businesses, net of cash acquired	(1,036,609)	(83,067)	(80,503)
Purchases of technology intangible assets	(3,750)	0	0
Purchase of equity investments and other investing activities	(2,054)	(3,787)	(51,009)
Net cash used in investing activities	(1,179,290)	(223,976)	(284,950)
Cash Flows from Financing Activities
Proceeds from issuance of 0.25% convertible senior notes due 2022	0	0	345,000
Payment of Finisar Notes	(560,112)	0	0
Payments on borrowings under Term Loan, Credit Facilities and Other Loans	(176,618)	(135,000)	(292,000)
Payments on borrowings under Credit Facility	(86,000)	0	0
Debt issuance costs	(63,510)	(5,589)	(10,061)
Proceeds from exercises of stock options	13,467	8,698	10,469
Common stock repurchases	(1,625)	(1,616)	(49,875)
Payments in satisfaction of employees' minimum tax obligations	(28,700)	(7,092)	(6,564)
Other financing activities	(2,339)	(4,524)	0
Net cash provided by financing activities	1,173,625	4,877	96,969
Effect of exchange rate changes on cash and cash equivalents	(3,453)	(1,542)	2,117
Net increase (decrease) in cash and cash equivalents	288,174	(42,166)	(24,850)
Cash and Cash Equivalents at Beginning of Period	204,872	247,038	271,888
Cash and Cash Equivalents at End of Period	493,046	204,872	247,038
Cash paid for interest	62,190	8,680	6,555
Non cash transactions:
Purchases of business - earnout consideration recorded in accrued liabilities	900	4,397	0
Additions to property, plant & equipment included in accounts payable	21,801	10,986	12,313
Revolving Credit Facility
Cash Flows from Financing Activities
Proceeds from borrowings under Credit Facility	160,000	0	0
Prior Credit Facility
Cash Flows from Financing Activities
Proceeds from borrowings under Credit Facility	10,000	150,000	100,000
Term A Facility
Cash Flows from Financing Activities
Proceeds from borrowings of Term Facility	1,241,000	0	0
Payments on borrowings under Term Loan, Credit Facilities and Other Loans	(46,538)	0	0
Term B Facility
Cash Flows from Financing Activities
Proceeds from borrowings of Term Facility	720,000	0	0
Payments on borrowings under Term Loan, Credit Facilities and Other Loans	$ (5,400)	$ 0	$ 0