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COVER PAGE 10-Q - shares
 3 Months Ended
Jun. 30, 2025
Jul. 28, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document period end date Jun. 30, 2025  
Document transition report false  
Entity File Number 0-21184  
Entity Registrant Name MICROCHIP TECHNOLOGY INCORPORATED  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 86-0629024  
Entity Address, Address Line One 2355 W. Chandler Blvd.  
Entity Address, City or Town Chandler  
Entity Address, State or Province AZ  
Entity Address, Postal Zip Code 85224-6199  
City Area Code 480  
Local Phone Number 792-7200  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   539,679,667
Entity Central Index Key 0000827054  
Current fiscal year end date --03-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Common Stock    
Document Information [Line Items]    
Title of 12(b) Security Common Stock, $0.001 par value per share  
Trading Symbol MCHP  
Security Exchange Name NASDAQ  
Depository shares    
Document Information [Line Items]    
Title of 12(b) Security Depositary Shares, each representing a 1/20th interest in a share of 7.50% Series A Mandatory Convertible Preferred Stock $0.001 par value per share  
Trading Symbol MCHPP  
Security Exchange Name NASDAQ