Debt Instrument, Convertible Business Period

No definition available.

Name:	iivi_DebtInstrumentConvertibleBusinessPeriod
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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Convertible, Measurement Period

+ References

No definition available.

+ Details

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Namespace Prefix:	iivi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Convertible, Measurement Period Percentage

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest coverage ratio.

+ References

No definition available.

+ Details

Name:	iivi_InterestCoverageRatio
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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Letter of credit sub facility maximum borrowing capacity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Leverage ratio.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of days prior to the maturity of outstanding.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Swing loan sub facility maximum initial borrowing capacity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Balance Type:	na
Period Type:	duration

- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
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Period Type:	instant

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Debt - Additional Information (Detail)			1 Months Ended	3 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Oct. 23, 2019 USD ($)	Sep. 24, 2019 USD ($)	Aug. 31, 2017 USD ($) d $ / shares	Sep. 30, 2021 USD ($) d	Jun. 30, 2021 USD ($)	Sep. 30, 2020
Line of Credit Facility [Line Items]
Available credit under lines of credit				$ 450,000,000
Weighted average interest rate of total borrowings				1.00%		2.00%
0.25% Convertible Senior Notes due 2022
Line of Credit Facility [Line Items]
Debt instrument, interest rate				0.25%		0.25%
Aggregate principal amount			$ 345,000,000
Aggregate principal outstanding				$ 344,967,000	$ 344,969,000
Debt instrument, conversion ratio			0.02125
Debt instrument conversion, conversion price per share (in usd per share) \| $ / shares			$ 47.06
Debt instrument conversion, If-converted value of notes				$ 435,000,000	532,000,000
Debt instrument conversion, trading days \| d			20
Debt instrument conversion, consecutive trading days \| d			30
Debt instrument conversion, conversion price percentage			130.00%
Debt instrument conversion, business day period			5 days
Debt instrument conversion, measurement period			5 days
Debt instrument conversion, measurement period percentage			98.00%
Effective interest rate				1.00%		5.00%
0.50% Finisar Convertible Notes
Line of Credit Facility [Line Items]
Redemption price percentage		100.00%		100.00%
Debt instrument, interest rate				0.50%
Aggregate principal amount		$ 560,000,000
Debt instrument, repurchase amount	$ 561,000,000
Aggregate principal outstanding				$ 15,000,000
Bank of America, N.A.
Line of Credit Facility [Line Items]
Letter of credit sub-facility maximum borrowing capacity				25,000,000
Swing loan sub-facility maximum initial borrowing capacity				20,000,000
Senior Secured Credit Facility \| Bank of America, N.A.
Line of Credit Facility [Line Items]
Aggregate principal amount				2,400,000,000
Term A Loan Facility
Line of Credit Facility [Line Items]
Proceeds from term loan	$ 561,000,000
Aggregate principal outstanding				1,041,900,000	$ 1,057,412,000
Term A Loan Facility \| Bank of America, N.A.
Line of Credit Facility [Line Items]
Aggregate principal amount				$ 1,255,000,000
Debt agreement term				5 years
Redemption price percentage				1.25%
Term B Loan Facility \| Bank of America, N.A.
Line of Credit Facility [Line Items]
Aggregate principal amount				$ 720,000,000
Debt agreement term				7 years
Revolving Credit Facility \| Bank of America, N.A.
Line of Credit Facility [Line Items]
Aggregate principal amount				$ 450,000,000
Debt agreement term				5 years
Senior Credit Facilities \| Fifth Fiscal Quarter Through Eighth Fiscal Quarter After Closing Date
Line of Credit Facility [Line Items]
Leverage ratio				4.50
Senior Credit Facilities \| Subsequent Fiscal Quarter
Line of Credit Facility [Line Items]
Leverage ratio				4.00
Senior Credit Facilities \| Minimum
Line of Credit Facility [Line Items]
Interest coverage ratio				3.00
Senior Credit Facilities \| Maximum \| First Four Fiscal Quarters After Closing Date
Line of Credit Facility [Line Items]
Leverage ratio				5.00
Senior Credit Facilities \| Federal Funds Rate
Line of Credit Facility [Line Items]
Debt instrument, rate added on variable rate				0.50%
Senior Credit Facilities \| Eurodollar
Line of Credit Facility [Line Items]
Debt instrument, rate added on variable rate				1.00%
Senior Credit Facilities \| 0.25% Convertible Senior Notes due 2022 \| I I V I Notes
Line of Credit Facility [Line Items]
Number of days prior to maturity of outstanding \| d				120
Debt instrument, interest rate				0.25%