v2.4.0.8

Basis of Presentation (Details) | Sep. 30, 2014
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Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Percentage Of Outstanding Stock Of All Subsidiaries Owned | 100.00%

X
- Definition The percentage of ownership of common stock or equity participation in the investee. + References No definition available. + Details
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Namespace Prefix: | mchp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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