v2.4.0.8

Derivative Instruments (Details) | 6 Months Ended
--- | ---
Sep. 30, 2014
Derivative [Line Items] |
Percentage Of Company Sales Denominated In Us Dollars | 99.00%

X
- Definition The percentage of the Company's transactions that are denominated in U.S. dollars. + References No definition available. + Details
Name: | mchp_PercentageOfCompanySalesDenominatedInUsDollars
Namespace Prefix: | mchp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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