Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	6 Months Ended
	Dec. 31, 2019	Nov. 08, 2018
Goodwill And Other Intangible Assets [Line Items]
Impairment of goodwill and long-lived assets	$ 0
Finisar Corporation
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	828,600,000	$ 828,630,000
Finisar Corporation | Technology
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	615,800,000
Finisar Corporation | Customer Lists
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	125,400,000
Finisar Corporation | In Progress Research and Development
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	76,000,000.0
Finisar Corporation | Trade Names
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	$ 11,400,000