XML 53 R41.htm IDEA: XBRL DOCUMENT
v3.20.4

Debt - Summary of Conversion Features (Details) $ / shares in Units, shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) $ / shares shares | Aug. 31, 2020 USD ($) shares | Jun. 30, 2020 USD ($) shares | Mar. 31, 2020 USD ($) shares | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) day | Dec. 31, 2019 USD ($) | Dec. 01, 2020 USD ($) | May 31, 2020 USD ($) | May 31, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
If-converted value in excess of principal |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |
Payments on settlement of convertible debt |  |  |  |  |  |  |  |  | 2,252,200,000 | $ 0 |  |  |
Shares issued to settle convertible debt |  |  |  |  | $ 1,160,100,000 | $ 768,700,000 | $ 651,500,000 |  |  |  |  |  |
Gain (loss) on settlement of debt | $ (129,200,000) | $ (45,100,000) | $ (21,500,000) |  | (142,100,000) |  |  | $ 0 | (214,000,000.0) | (2,000,000.0) |  |  |
Debt instrument, unamortized discount | 399,600,000 |  |  | $ 1,043,200,000 | 399,600,000 |  |  |  | 399,600,000 |  |  |  |
Gross long-term debt including current maturities | $ 9,578,600,000 |  |  | 10,593,300,000 | 9,578,600,000 |  |  |  | 9,578,600,000 |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Option indexed to equity, strike price (in dollars per share) | $ / shares | $ 233.58 |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings on revolving loan under credit facility | $ 213,000,000.0 |  |  |  |  |  |  |  | $ 3,073,000,000.0 | $ 682,000,000.0 |  |  |
Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on settlement of debt | (12,900,000) |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount | 1,086,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Payments on settlement of convertible debt | $ 428,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt (in shares) | shares | 8.4 |  |  |  |  |  |  |  |  |  |  |  |
2017 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining period, in years, over which unamortized debt discount will be recognized as non-cash interest expense (in years) |  |  |  |  |  |  |  |  | 6 years 1 month 6 days |  |  |  |
Payments on settlement of convertible debt | $ 155,400,000 | 381,800,000 | 643,900,000 |  |  |  |  |  |  |  |  |  |
2017 Senior Convertible Debt | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount | $ 588,800,000 | $ 381,800,000 | $ 643,900,000 |  |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt (in shares) | shares | 3.0 | 2.1 | 2.5 |  |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt | $ 408,700,000 | $ 221,100,000 | $ 246,400,000 |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt | 1,200,000,000 | 602,900,000 | 890,300,000 |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt, liability component | 486,700,000 | 299,000,000.0 | 481,000,000.0 |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt, equity component | 655,300,000 | 292,200,000 | 390,900,000 |  |  |  |  |  |  |  |  |  |
2015 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  |  |  |  |  |  |  | 130.00% |  |  |  |
Remaining period, in years, over which unamortized debt discount will be recognized as non-cash interest expense (in years) |  |  |  |  |  |  |  |  | 4 years 1 month 6 days |  |  |  |
Payments on settlement of convertible debt | 48,500,000 | 414,300,000 | 383,300,000 | 615,000,000.0 |  |  |  |  |  |  |  |  |
2015 Senior Convertible Debt | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount | $ 90,000,000.0 | $ 414,300,000 | $ 383,300,000 | $ 615,000,000.0 |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt (in shares) | shares | 1.6 | 5.2 | 4.1 | 5.2 |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt | $ 221,000,000.0 | $ 547,600,000 | $ 405,100,000 | $ 351,800,000 |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt | 269,600,000 | 961,800,000 | 788,400,000 | 966,800,000 |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt, liability component | 79,400,000 | 351,700,000 | 314,400,000 |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt, equity component | 184,500,000 | $ 592,300,000 | 464,400,000 |  |  |  |  |  |  |  |  |  |
2017 Junior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining period, in years, over which unamortized debt discount will be recognized as non-cash interest expense (in years) |  |  |  |  |  |  |  |  | 16 years 1 month 6 days |  |  |  |
Payments on settlement of convertible debt | 225,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
2017 Junior Convertible Debt | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount | $ 407,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt (in shares) | shares | 3.8 |  |  |  |  |  |  |  |  |  |  |  |
Shares issued to settle convertible debt | $ 530,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt | 819,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt, liability component | 246,300,000 |  |  |  |  |  |  |  |  |  |  |  |
Total consideration, extinguishment of debt, equity component | 547,100,000 |  |  |  |  |  |  |  |  |  |  |  |
2020 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining period, in years, over which unamortized debt discount will be recognized as non-cash interest expense (in years) |  |  |  |  |  |  |  |  | 3 years 10 months 24 days |  |  |  |
2020 Senior Convertible Debt | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion, converted instrument amount | 665,500,000 |  |  |  |  |  |  |  |  |  |  |  |
2020 Senior Convertible Debt | Long-term Debt | 2017 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion, converted instrument amount | 601,500,000 |  |  |  |  |  |  |  |  |  |  |  |
2020 Senior Convertible Debt | Long-term Debt | 2017 Junior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion, converted instrument amount | 64,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, redemption price (percent) |  |  |  |  |  |  |  |  | 100.00% |  |  |  |
Gross long-term debt including current maturities | 1,622,000,000.0 |  |  | 3,866,300,000 | 1,622,000,000.0 |  |  |  | $ 1,622,000,000.0 |  |  |  |
Convertible Debt | Debt Instrument, Redemption, Period One |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  |  |  |  |  |  |  | 130.00% |  |  |  |
Threshold trading days | day |  |  |  |  |  |  |  |  | 20 |  |  |  |
Threshold consecutive trading days | day |  |  |  |  |  |  |  |  | 30 |  |  |  |
Convertible Debt | Debt Instrument, Redemption, Period Two |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  |  |  |  |  |  |  | 98.00% |  |  |  |
Threshold trading days | day |  |  |  |  |  |  |  |  | 5 |  |  |  |
Threshold consecutive trading days | day |  |  |  |  |  |  |  |  | 10 |  |  |  |
Senior Indebtedness |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, unamortized discount |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,500,000
Gross long-term debt including current maturities | 7,956,600,000 |  |  | 6,727,000,000.0 | 7,956,600,000 |  |  |  | $ 7,956,600,000 |  |  |  |
Senior Indebtedness | 2017 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  | $ 643,900,000 |  |  |  |  |  |  |
Senior Indebtedness | 2015 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount |  |  | 383,300,000 |  |  |  |  |  |  |  |  |  |
Senior Indebtedness | 2020 Senior Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs, including equity portion, gross | 10,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs, gross | 9,000,000.0 |  |  |  | 9,000,000.0 |  |  |  | 9,000,000.0 |  |  |  |
Equity portion of convertible debt issuance costs | 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, unamortized discount | 110,000,000.0 |  |  |  | 110,000,000.0 |  |  |  | 110,000,000.0 |  |  |  |
Capped options indexed to equity, costs | 35,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Senior Indebtedness | 2.670% 2023 Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, unamortized discount | $ 2,500,000 |  |  | 0 | $ 2,500,000 |  |  |  | $ 2,500,000 |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.00 |
Coupon Interest Rate | 2.67% |  |  |  | 2.67% |  |  |  | 2.67% |  |  | 2.67% |
Gross long-term debt including current maturities | $ 1,000,000,000.0 |  |  | 0 | $ 1,000,000,000.0 |  |  |  | $ 1,000,000,000.0 |  |  |  |
Senior Indebtedness | 0.972% 2024 Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, redemption price (percent) |  |  |  |  |  |  |  |  | 101.00% |  |  |  |
Debt instrument, unamortized discount | 4,100,000 |  |  | 0 | 4,100,000 |  |  |  | $ 4,100,000 |  | $ 4,200,000 |  |
Debt instrument, face amount | $ 1,400,000,000 |  |  |  | $ 1,400,000,000 |  |  |  | $ 1,400,000,000 |  |  |  |
Coupon Interest Rate | 0.972% |  |  |  | 0.972% |  |  |  | 0.972% |  |  |  |
Gross long-term debt including current maturities | $ 1,400,000,000.0 |  |  | 0 | $ 1,400,000,000.0 |  |  |  | $ 1,400,000,000.0 |  |  |  |
Senior Indebtedness | Debt Instrument, Redemption, Period One | 0.972% 2024 Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, redemption price (percent) | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Bridge Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount |  |  | 615,000,000.0 |  |  |  |  |  |  |  |  |  |
Gain (loss) on settlement of debt |  |  | $ (5,300,000) |  |  |  |  |  |  |  |  |  |
Debt instrument, unamortized discount | $ 0 |  |  | 3,100,000 | 0 |  |  |  | 0 |  |  |  |
Gross long-term debt including current maturities | $ 0 |  |  | $ 615,000,000.0 | $ 0 |  |  |  | $ 0 |  |  |  |

X
- Definition Capital Purchase Of Capped Options Indexed to Equity, Costs + References No definition available. + Details
Name: | mchp_CapitalPurchaseOfCappedOptionsIndexedToEquityCosts
Namespace Prefix: | mchp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Issuance Costs, Including Equity Portion of Costs, Gross + References No definition available. + Details
Name: | mchp_DeferredIssuanceCostsIncludingEquityPortionOfCostsGross
Namespace Prefix: | mchp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Convertible debt issuance costs equity portion + References No definition available. + Details
Name: | mchp_Equityportionofconvertibledebtissuancecosts
Namespace Prefix: | mchp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total Consideration, Extinguishment of Debt + References No definition available. + Details
Name: | mchp_TotalConsiderationExtinguishmentofDebt
Namespace Prefix: | mchp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total Consideration, Extinguishment of Debt, Equity Component + References No definition available. + Details
Name: | mchp_TotalConsiderationExtinguishmentofDebtEquityComponent
Namespace Prefix: | mchp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total Consideration, Extinguishment of Debt, Liability Component + References No definition available. + Details
Name: | mchp_TotalConsiderationExtinguishmentofDebtLiabilityComponent
Namespace Prefix: | mchp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 + Details
Name: | us-gaap_DebtConversionConvertedInstrumentAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
Name: | us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Exercise or strike price stated in the contract for options indexed to the issuer's equity shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120519210&loc=d3e90205-114008 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=109262807&loc=d3e22047-110879 + Details
Name: | us-gaap_OptionIndexedToIssuersEquityStrikePrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
Name: | us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The gross value of stock issued during the period upon the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
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_CreditFacilityAxis=mchp_TermLoanFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExtinguishmentOfDebtAxis=us-gaap_LongTermDebtMember
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_A2015SeniorSubordinatedConvertibleDebtMember
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_DebtInstrumentAxis=mchp_A2020SeniorSubordinatedConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodTwoMember
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_SeniorSecuredNotes2.6702023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mchp_SeniorSecuredNotes09722024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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