Debt - Components of Debt (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020
Line of Credit Facility [Line Items]
Total debt	$ 1,376,406	$ 1,375,141
Current portion of long-term debt	(420,029)	(62,050)
Long-term debt, less current portion	$ 956,377	1,313,091
0.50% Convertible Senior Notes
Line of Credit Facility [Line Items]
Debt instrument, interest rate	0.50%
Total debt, gross	$ 15,000
0.50% Convertible Senior Notes | Finisar Corporation
Line of Credit Facility [Line Items]
Total debt, gross	$ 14,888	14,888
0.25% Convertible Senior Notes due 2022
Line of Credit Facility [Line Items]
Debt instrument, interest rate	0.25%		0.25%
Total debt, gross	$ 344,967	344,969
0.25% convertible senior notes unamortized discount attributable to cash conversion option (prior to adoption of ASU 2020-06) and debt issuance costs including initial purchaser discount	(1,876)	(16,937)
Term A Loan Facility
Line of Credit Facility [Line Items]
Total debt, gross	$ 1,041,900	1,057,412
Term A Loan Facility | LIBOR
Line of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	1.375%
Term A Facility and Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit facility unamortized debt issuance costs	$ (23,473)	$ (25,191)