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Cover - USD ($) $ in Millions	12 Months Ended
Cover - USD ($) $ in Millions	Mar. 31, 2024	May 16, 2024	Sep. 29, 2023
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Mar. 31, 2024
Current Fiscal Year End Date	--03-31
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	349 Oyster Point Boulevard
Entity Address, City or Town	South San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94080
City Area Code	650
Local Phone Number	938-6300
Title of 12(b) Security	Class A common stock, $0.0001 par value per share
Trading Symbol	ME
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 300
Entity Central Index Key	0001804591
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false
Documents Incorporated by Reference	Portions of the Registrant’s definitive proxy statement to be delivered to stockholders in connection with the 2024 annual meeting of stockholders are incorporated by reference in response to Part III of this Annual Report on Form 10-K to the extent stated herein. The 2024 Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Common Stock Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		323,542,807
Common Stock Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		166,714,362