Business acquisition equity interests issued or issuable number of shares issued per each share.

No definition available.

Name:	iivi_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssuedPerEachShare
Namespace Prefix:	iivi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Business acquisition percentage of aggregate merger consideration in cash.

+ References

No definition available.

+ Details

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Namespace Prefix:	iivi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Business acquisition percentage of aggregate merger consideration in stock.

+ References

No definition available.

+ Details

Name:	iivi_BusinessAcquisitionPercentageOfAggregateMergerConsiderationInStock
Namespace Prefix:	iivi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Business acquisition purchase price per share in cash.

+ References

No definition available.

+ Details

Name:	iivi_BusinessAcquisitionPurchasePricePerShareInCash
Namespace Prefix:	iivi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

Name:	us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Finisar Acquisition - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Nov. 08, 2018	Sep. 30, 2019	Jun. 30, 2019
Business Acquisition [Line Items]
Goodwill		$ 1,078,569	$ 319,778
Finisar Corporation
Business Acquisition [Line Items]
Percentage of aggregate consideration in cash	60.00%
Percentage of aggregate consideration in stock	40.00%
Acquisition related costs		32,200
Business acquisition, revenue of acquired entity		22,100
Business acquisition, net loss of acquired entity excluding severance related costs		$ 7,800
Goodwill	$ 759,239
Finisar Corporation \| Proration Adjustment
Business Acquisition [Line Items]
Common stock price	$ 46.88
Cash Consideration \| Finisar Corporation
Business Acquisition [Line Items]
Amount per share to be received	$ 26.00
Stock Consideration \| Finisar Corporation
Business Acquisition [Line Items]
Number of shares to be received	0.5546
Stock Consideration \| Finisar Corporation \| Proration Adjustment
Business Acquisition [Line Items]
Number of shares to be received	0
Mixed Consideration \| Finisar Corporation
Business Acquisition [Line Items]
Amount per share to be received	$ 15.60
Number of shares to be received	0.2218
Mixed Consideration \| Finisar Corporation \| Proration Adjustment
Business Acquisition [Line Items]
Amount per share to be received	$ 0
Number of shares to be received	0
Final Cash Consideration \| Finisar Corporation \| Proration Adjustment
Business Acquisition [Line Items]
Amount per share to be received	$ 15.94
Number of shares to be received	0.2146