v2.4.0.8

Basis of Presentation (Details)	Sep. 30, 2014
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

Name:	mchp_PercentageOfOutstandingStockOfAllSubsidiariesOwned
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