Name:	mchp_ConvertibleDebtInstrumentInitialConversionPricePerShare
Namespace Prefix:	mchp_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

The amount of debt discount from estimated fair value of the liability component of the debentures at the issuance date.

No definition available.

Name:	mchp_DebtDiscountOfEstimatedFairValueOfLiabilityComponentOfDebenturesAtIssuanceDate
Namespace Prefix:	mchp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The principal amount of convertible debt instrument that is used as the conversion unit to determine the number of shares the holder of the debt instrument can convert the debt into.

No definition available.

Name:	mchp_DebtInstrumentConvertibleConversionRatioAmountOfPrincipal
Namespace Prefix:	mchp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of shares of common stock that will be added to the conversion ratio if at the time of conversion the applicable stock price of the Company's common stock exceeds the base conversion price, adjusted for dividends paid since the issuance date.

No definition available.

Name:	mchp_DebtInstrumentConvertibleConversionRatioIncreaseOptionAdjustedforDividends
Namespace Prefix:	mchp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

The amount of shares of common stock that will be added to the conversion ratio, at issuance date, if at the time of conversion the applicable stock price of the Company's common stock exceeds the base conversion price.

No definition available.

Name:	mchp_DebtinstrumentConvertibleConversionRatioIncreaseOptionInitialRatioatIssuance
Namespace Prefix:	mchp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Debt Instrument, Convertible, Conversion Ratio Maximum Conversion Rate

No definition available.

Name:	mchp_DebtInstrumentConvertibleConversionRatioMaximumConversionRate
Namespace Prefix:	mchp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Debt Instrument, Convertible, Conversion Ratio Maximum Conversion Rate, Adjusted for Paid Dividends

No definition available.

Name:	mchp_DebtInstrumentConvertibleConversionRatioMaximumConversionRateAdjustedforPaidDividends
Namespace Prefix:	mchp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

The initial ratio applied to the debt for purposes of determining the number of shares of the equity security into which the debt will be converted.

No definition available.

Name:	mchp_DebtInstrumentConvertibleInitialConversionRatio
Namespace Prefix:	mchp_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

Debt portion of convertible debt issuance costs

No definition available.

Name:	mchp_Debtportionofconvertibledebtissuancecosts
Namespace Prefix:	mchp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Convertible debt issuance costs equity portion

No definition available.

Name:	mchp_Equityportionofconvertibledebtissuancecosts
Namespace Prefix:	mchp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Fair value of junior subordinated convertible debenture at the balance sheet date.

No definition available.

Name:	mchp_EstimatedFairValueOfLiabilityComponentOfDebenturesOnIssuanceDate
Namespace Prefix:	mchp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

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-Subparagraph (SX 210.5-03.8)

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Name:	us-gaap_AmortizationOfDebtDiscountPremium
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Topic 470

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Name:	us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

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

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-Glossary Conversion Rate

-URI http://asc.fasb.org/extlink&oid=6509012

Name:	us-gaap_DebtInstrumentConvertibleConversionRatio1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Data Type:	xbrli:durationItemType
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Period Type:	duration

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

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The average effective interest rate during the reporting period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

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Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Topic 210

-SubTopic 10

-Section S99

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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-Name Accounting Standards Codification

-Topic 210

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Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

No definition available.

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

Amount of the cost of borrowed funds accounted for as interest expense for debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

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

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

No definition available.