Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities
Net Earnings (Loss)	$ 297,552	$ (67,029)	$ 107,517
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation	187,803	156,690	75,745
Amortization	82,266	64,192	16,620
Share-based compensation expense	70,953	68,480	21,946
Amortization of discount on convertible debt and debt issuance costs	20,732	22,150	12,550
Debt extinguishment expense	24,747	3,960	0
Losses (gains) on disposals of property, plant and equipment	2,537	(1,461)	0
Losses on foreign currency remeasurements and transactions	5,545	14,442	3,155
Earnings from equity investments	(14,246)	(2,775)	(3,214)
Deferred income taxes	(371)	(42,454)	(10,462)
Impairment of investment	0	4,980	0
Increase (decrease) in cash from changes in (net of effects of acquisitions):
Accounts receivable	(51,697)	(91,981)	(50,764)
Inventories	(44,645)	112,572	(36,392)
Accounts payable	2,266	45,026	15,999
Income taxes	(18,086)	40,061	366
Accrued compensation and benefits	23,934	0	0
Other operating net assets (liabilities)	(14,937)	(29,561)	25,409
Net cash provided by operating activities	574,353	297,292	178,475
Cash Flows from Investing Activities
Additions to property, plant & equipment	(146,337)	(136,877)	(137,122)
Purchases of businesses, net of cash acquired	(34,394)	(1,036,609)	(83,067)
Other investing activities	7,774	(5,804)	(3,787)
Net cash used in investing activities	(172,957)	(1,179,290)	(223,976)
Cash Flows from Financing Activities
Proceeds from issuance of common shares	460,000	0	0
Payment of Finisar Notes	0	(560,112)	0
Payments on borrowings under Term Loan, Credit Facilities and Other Loans	0	(176,618)	(135,000)
Payments on borrowings under Revolving Credit Facility	(74,000)	(86,000)	0
Debt issuance costs	0	(63,510)	(5,589)
Equity issuance costs	(58,596)	0	0
Proceeds from exercises of stock options and purchases of stock under employee stock purchase plan	32,360	13,467	8,698
Common stock repurchases	0	(1,625)	(1,616)
Payments in satisfaction of employees' minimum tax obligations	(19,701)	(28,700)	(7,092)
Payment of dividends	(20,319)	0	0
Other financing activities	(2,367)	(2,339)	(4,524)
Net cash provided by financing activities	675,727	1,173,625	4,877
Effect of exchange rate changes on cash and cash equivalents	21,723	(3,453)	(1,542)
Net increase (decrease) in cash and cash equivalents	1,098,846	288,174	(42,166)
Cash and Cash Equivalents at Beginning of Period	493,046	204,872	247,038
Cash and Cash Equivalents at End of Period	1,591,892	493,046	204,872
Non cash transactions:
Additions to property, plant & equipment included in accounts payable	32,028	21,801	10,986
Revolving Credit Facility
Cash Flows from Financing Activities
Proceeds from borrowings under Credit Facility	0	160,000	0
Prior Credit Facility
Cash Flows from Financing Activities
Proceeds from borrowings under Credit Facility	0	10,000	150,000
Term A Facility
Cash Flows from Financing Activities
Proceeds from borrowings of Term Facility	0	1,241,000	0
Payments on borrowings under Term Loan, Credit Facilities and Other Loans	(137,050)	(46,538)	0
Term B Facility
Cash Flows from Financing Activities
Proceeds from borrowings of Term Facility	0	720,000	0
Payments on borrowings under Term Loan, Credit Facilities and Other Loans	(714,600)	(5,400)	0
Series A Preferred Stock
Cash Flows from Financing Activities
Proceeds from issuance of preferred shares	460,000	0	0
Series B Preferred Stock
Cash Flows from Financing Activities
Proceeds from issuance of preferred shares	$ 750,000	$ 0	$ 0