Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2021	Oct. 31, 2021
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Fiscal Period Focus	Q2
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Quarterly Report	true
Document Transition Report	false
Entity Registrant Name	23ANDME HOLDING CO.
Entity Central Index Key	0001804591
Entity File Number	001-39587
Entity Tax Identification Number	87-1240344
Entity Incorporation, State or Country Code	DE
Current Fiscal Year End Date	--03-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Address, Address Line One	223 N
Entity Address, Address Line Two	Mathilda Avenue
Entity Address, City or Town	Sunnyvale
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94086
Local Phone Number	938-6300
City Area Code	650
Class A Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Class A common stock, $0.0001 par value per share
Trading Symbol	ME
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		93,677,322
Redeemable Warrants [Member]
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants, each whole warrant exercisable for one share of Class A common stock
Trading Symbol	MEUSW
Security Exchange Name	NASDAQ
Class B Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		313,759,355