Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended
	Sep. 30, 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	828,000,000	$ 827,689,000
Finisar Corporation | Technology
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	615,000,000
Finisar Corporation | Customer Lists
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	125,000,000
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
Finisar Corporation | Trade Names
Goodwill And Other Intangible Assets [Line Items]
Identifiable intangibles assets recorded in connection with acquisitions	$ 11,000,000