v3.25.2
Cover - shares
 3 Months Ended
Jun. 30, 2025
Jul. 25, 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 001-39587  
Entity Registrant Name 23ANDME HOLDING CO  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 87-1240344  
Entity Address, Address Line One 870 Market Street, Room 415  
Entity Address, City or Town San Francisco,  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94102  
City Area Code 650  
Local Phone Number 938-6300  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001804591  
Current Fiscal Year End Date --03-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment flag false  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   25,431,244
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   2,110,250