v3.25.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2025
Apr. 30, 2025
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Registrant Name VIGIL NEUROSCIENCE, INC.  
Entity Central Index Key 0001827087  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol VIGL  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   46,671,534
Entity Shell Company false  
Entity File Number 001-41200  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-1880494  
Entity Address, Address Line One 100 Forge Road,  
Entity Address, Address Line Two Suite 700  
Entity Address, City or Town Watertown  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02472  
City Area Code 857  
Local Phone Number 254-4445  
Document Quarterly Report true  
Document Transition Report false