| Document and Entity Information | Sep. 18, 2024 |
| Cover [Abstract] | |
| Security Exchange Name | NASDAQ |
| Amendment Flag | false |
| Entity Central Index Key | 0001804591 |
| Document Type | 8-K |
| Document Period End Date | Sep. 18, 2024 |
| Entity Registrant Name | 23andMe Holding Co. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39587 |
| Entity Tax Identification Number | 87-1240344 |
| Entity Address, Address Line One | 223 N. Mathilda Avenue |
| Entity Address, City or Town | Sunnyvale |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94086 |
| City Area Code | (650) |
| Local Phone Number | 938-6300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock, $0.0001 par value per share |
| Trading Symbol | ME |
| Entity Emerging Growth Company | false |
