Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net earnings (loss)	$ 134,166	$ (124,211)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation	91,027	69,386
Amortization	40,859	39,714
Share-based compensation expense	38,018	34,380
Amortization of discount on convertible debt and debt issuance costs	10,376	9,639
Debt extinguishment costs	24,747	3,960
Losses on foreign currency remeasurements and transactions	12,178	4,575
Earnings from equity investments	(1,817)	(918)
Deferred income taxes	8,518	(42,076)
Increase (decrease) in cash from changes in (net of effect of acquisitions):
Accounts receivable	32,371	31,237
Inventories	(1,714)	78,065
Accounts payable	(23,262)	(1,963)
Income taxes	(12,013)	8,930
Accrued compensation and benefits	(13,965)	(9,642)
Other operating net assets (liabilities)	16,210	(44,816)
Net cash provided by operating activities	355,699	56,260
Cash Flows from Investing Activities
Additions to property, plant & equipment	(79,329)	(80,288)
Purchases of businesses, net of cash acquired	(34,431)	(1,036,609)
Other investing activities	0	(1,102)
Net cash used in investing activities	(113,760)	(1,117,999)
Cash Flows from Financing Activities
Proceeds from issuance of common shares	460,000	0
Proceeds from issuance of preferred shares	460,000	0
Proceeds from borrowings of Revolving Credit Facility	0	160,000
Proceeds from borrowings under prior Credit Facility	0	10,000
Payments on Finisar Notes	0	(560,112)
Payments on borrowings under prior Term Loan, Credit Facility and other loans	0	(176,596)
Payments on borrowings under Revolving Credit Facility	(74,000)	(66,000)
Debt issuance costs	0	(63,510)
Equity issuance costs	(36,092)	0
Proceeds from exercises of stock options and purchases of stock under employee stock purchase plan	22,355	3,077
Common stock repurchase	0	(1,626)
Payments in satisfaction of employees' minimum tax obligations	(6,941)	(15,031)
Payment of dividends	(6,519)	0
Other financing activities	(366)	(1,839)
Net cash provided by financing activities	72,812	1,232,050
Effect of exchange rate changes on cash and cash equivalents	26,743	1,657
Net increase in cash and cash equivalents	341,494	171,968
Cash and Cash Equivalents at Beginning of Period	493,046	204,872
Cash and Cash Equivalents at End of Period	834,540	376,840
Cash paid for interest	13,898	24,745
Cash paid for income taxes	24,227	25,087
Additions to property, plant & equipment included in accounts payable	10,497	12,502
Term A Loan
Cash Flows from Financing Activities
Proceeds from borrowings	0	1,241,000
Payments on borrowings	(31,025)	(15,513)
Term B Loan
Cash Flows from Financing Activities
Proceeds from borrowings	0	720,000
Payments on borrowings	(714,600)	$ (1,800)
Cash paid for interest	$ 600