Consolidated Statements of Shareholders' Equity and Mezzanine Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Interest Rate Swap	Interest Rate Cap	Preferred Shares	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Interest Rate Swap	Accumulated Other Comprehensive Income (Loss) Interest Rate Cap	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)								0
Beginning balance, Common Stock (in shares) at Jun. 30, 2019						76,315,000
Beginning balance, Treasury Stock (in shares) at Jun. 30, 2019														(12,604,000)
Beginning Balance at Jun. 30, 2019	$ 1,133,209					$ 382,423		$ 0	$ (24,221)			$ 943,581		$ (168,574)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						2,888,000								702,000
Share-based and deferred compensation activities	(87,703)					$ (116,817)								$ 29,114
Purchases of treasury stock (in shares)														(50,000)
Purchases of treasury stock	(1,625)													$ (1,625)
Shares issued related to Finisar acquisition (in shares)						26,713,000
Shares issued related to Finisar acquisition	987,707					$ 987,707
Net earnings (loss)	(67,029)											(67,029)
Foreign currency translation adjustments	(15,969)								(15,969)
Change in fair value of interest rate swap/cap, net of taxes			$ (44,085)	$ 0						$ (44,085)
Pension adjustment, net of taxes	(3,108)								(3,108)
Ending balance, Common Stock, (in shares) at Jun. 30, 2020						105,916,000
Ending balance, Preferred Stock (in shares) at Jun. 30, 2020								0
Ending balance, Treasury Stock (in shares) at Jun. 30, 2020														(13,356,000)
Ending Balance at Jun. 30, 2020	2,076,803					$ 1,486,947		$ 0	(87,383)			876,552		$ (199,313)
Ending balance (in shares) at Jun. 30, 2020					0
Ending balance at Jun. 30, 2020					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)								0
Mezzanine Equity
Beginning balance (in shares)					0
Share-based and deferred compensation activities (in shares)						2,512,000								284,000
Share-based and deferred compensation activities	$ (83,584)					$ (102,737)								$ 19,153
Purchases of treasury stock (in shares)	0
Net earnings (loss)	$ 297,552											297,552
Stock issues in underwritten public offering (in shares)						10,698,000		2,300,000
Shares issued in underwritten public offering	883,908					$ 438,589		$ 445,319
Accretion to redemption value of Series B shares issued in March 2021	(508)											(508)
Foreign currency translation adjustments	86,991								86,991
Change in fair value of interest rate swap/cap, net of taxes			12,312	0						12,312
Pension adjustment, net of taxes	2,347								2,347
Dividends and deemed dividends	(36,819)											(36,819)
Ending balance, Common Stock, (in shares) at Jun. 30, 2021						119,127,000
Ending balance, Preferred Stock (in shares) at Jun. 30, 2021								2,300,000
Ending balance, Treasury Stock (in shares) at Jun. 30, 2021														(13,640,000)
Ending Balance at Jun. 30, 2021	3,406,170	$ (11,472)				$ 2,028,273	$ (56,388)	$ 445,319	14,267			1,136,777	$ 44,916	$ (218,466)
Mezzanine Equity
Series B shares issued in March 2021 (in shares)					75,000
Series B shares issued in March 2021					$ 716,087
Accretion to redemption value of Series B shares issued in March 2021					508
Dividends and deemed dividends					$ 9,583
Ending balance (in shares) at Jun. 30, 2021					75,000
Ending balance at Jun. 30, 2021					$ 726,178
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)								2,300,000
Mezzanine Equity
Beginning balance (in shares)					75,000
Share-based and deferred compensation activities (in shares)						1,796,000								333,000
Share-based and deferred compensation activities	$ (71,779)					$ (92,667)								$ 20,888
Purchases of treasury stock (in shares)	0
Net earnings (loss)	$ 234,759											234,759
Foreign currency translation adjustments	(89,967)								(89,967)
Change in fair value of interest rate swap/cap, net of taxes			$ 43,508	$ 14,306						$ 43,508	$ 14,306
Pension adjustment, net of taxes	15,719								15,719
Dividends and deemed dividends	(68,327)											(68,327)
Ending balance, Common Stock, (in shares) at Jun. 30, 2022						120,923,000
Ending balance, Preferred Stock (in shares) at Jun. 30, 2022								2,300,000
Ending balance, Treasury Stock (in shares) at Jun. 30, 2022														(13,973,000)
Ending Balance at Jun. 30, 2022	$ 3,616,475					$ 2,064,552		$ 445,319	$ (2,167)			$ 1,348,125		$ (239,354)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Mezzanine Equity
Dividends and deemed dividends					$ 40,625
Ending balance (in shares) at Jun. 30, 2022					75,000
Ending balance at Jun. 30, 2022					$ 766,803
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)								2,300,000
Mezzanine Equity
Beginning balance (in shares)					75,000