XML 58 R48.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Fair Value of Financial Instruments (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Mar. 31, 2023
--- | --- | ---
Carrying Amount |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | $ 5,695.4 | $ 6,439.9
Carrying Amount | Term Loan Facility |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 749.2 | 0.0
Carrying Amount | Commercial Paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 645.8 | 0.0
Carrying Amount | Revolving Credit Facility | Line of Credit |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 91.4
Carrying Amount | 4.333% 2023 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 999.4
Carrying Amount | 2.670% 2023 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 999.4
Carrying Amount | 0.972% 2024 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 1,399.7 | 1,398.2
Carrying Amount | 0.983% 2024 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 999.0 | 997.9
Carrying Amount | 4.250% 2025 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 1,194.1 | 1,191.8
Carrying Amount | 2015 Senior Convertible Debt | Senior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 6.7 | 12.4
Carrying Amount | 2017 Senior Convertible Debt | Senior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 37.8 | 81.8
Carrying Amount | 2020 Senior Convertible Debt | Senior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 663.1 | 661.1
Carrying Amount | 2017 Junior Convertible Debt | Junior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 6.5
Fair Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 5,769.2 | 6,516.0
Fair Value | Term Loan Facility |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 750.0 | 0.0
Fair Value | Commercial Paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 647.0 | 0.0
Fair Value | Revolving Credit Facility | Line of Credit |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 100.0
Fair Value | 4.333% 2023 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 997.1
Fair Value | 2.670% 2023 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 0.0 | 985.4
Fair Value | 0.972% 2024 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 1,391.6 | 1,337.6
Fair Value | 0.983% 2024 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 968.6 | 941.9
Fair Value | 4.250% 2025 Notes | Senior Indebtedness |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 1,181.3 | 1,176.0
Fair Value | 2015 Senior Convertible Debt | Senior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 22.9 | 41.8
Fair Value | 2017 Senior Convertible Debt | Senior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 81.1 | 189.6
Fair Value | 2020 Senior Convertible Debt | Senior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | 726.7 | 732.1
Fair Value | 2017 Junior Convertible Debt | Junior Subordinated Convertible Debt |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value disclosure for debt obligations | $ 0.0 | $ 14.5

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=mchp_TermLoanFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_SeniorUnsecuredNotes2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_SeniorUnsecuredNotes26702023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_SeniorUnsecuredNotes09722024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_SeniorUnsecuredNotes09832024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_SeniorUnsecuredNotes2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_A2015SeniorSubordinatedConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleSubordinatedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_A2017SeniorSubordinatedConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_A2020SeniorSubordinatedConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_A2017JuniorSubordinatedConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_JuniorSubordinatedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |