Common Stock and Warrants - Additional Information (Detail) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended
	Dec. 22, 2021 USD ($) $ / shares shares	Jun. 16, 2021 Vote $ / shares shares	Feb. 04, 2021 shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($)	Sep. 30, 2021 $ / shares	Mar. 31, 2021 $ / shares shares
Class Of Stock [Line Items]
Stock split description		Each share of Class B common stock is convertible into one share of Class A common stock any time at the option of the holder and is automatically converted into one share of Class A common stock upon transfer				The shares and net loss per common share prior to the Merger have been retroactively restated as shares reflecting the exchange ratio established in the Merger (each outstanding share of 23andMe, Inc. Class A common stock was exchanged for 2.293698169 shares of the Company’s Class A common stock, and each outstanding share of 23andMe, Inc. Class B common stock, including all shares of 23andMe, Inc. preferred stock (which were converted to shares of 23andMe, Inc. Class B common stock immediately prior to the Merger), was exchanged for 2.293698169 shares of the Company’s Class B common stock).
Common stock, shares authorized		1,490,000,000
Preferred stock, shares authorized		10,000,000
Preferred stock, par value | $ / shares		$ 0.0001
Preferred stock, shares issued				0		0
Preferred stock, shares outstanding				0		0
Warrants outstanding				0		0
Number of Redeemed Warrants Redemption Payment Made To	1,164,142
Change in fair value of warrant liabilities | $				$ (3,695)	$ 0	$ (32,989)	$ 0
Description of warrant redemption	Warrants were exercised, representing approximately 95% of the outstanding Warrants
Public Warrants and Private Placement Warrants [Member]
Class Of Stock [Line Items]
Warrants exercised	23,901,466
Class A Common Stock [Member]
Class Of Stock [Line Items]
Common Stock, Par value | $ / shares		$ 0.0001		$ 0.0001		$ 0.0001			$ 0.00001
Exchange Ratio		2.293698169				2.293698169
Common stock, shares authorized		1,140,000,000		1,140,000,000		1,140,000,000
Number of votes | Vote		1
Common Stock, Shares, Issued	6,016,327			199,176,879		199,176,879			20,713,076
Common Stock, Shares, Outstanding				199,176,879		199,176,879			20,713,076
Exercise price | $ / shares	$ 11.50
Trading days			20 days
Share Redemption Trigger Price | $ / shares				$ 18.00		$ 18.00
Exchange ratio for shares of Class A common stock per warrant | $ / shares	$ 0.2516
Class A Common Stock [Member] | Private Placement Warrants
Class Of Stock [Line Items]
Number of Days after the completion of an initial business combination						30 days
Class of Warrant or Right Redemption Threshold Trading Days						10 days
Class of warrants or rights redemption price per warrant | $ / shares				$ 10.00		$ 10.00
Class A Common Stock [Member] | 23andMe, Inc [Member]
Class Of Stock [Line Items]
Common Stock, Par value | $ / shares		$ 0.00001
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member]
Class Of Stock [Line Items]
Expiry date				5 years		5 years
Trading days			20 days
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member] | Private Placement Warrants
Class Of Stock [Line Items]
Number of Warrants				8,113,999		8,113,999
Exercise price | $ / shares				$ 11.50		$ 11.50
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member] | Public Warrants
Class Of Stock [Line Items]
Number of Warrants				16,951,609		16,951,609
Exercise price | $ / shares								$ 11.50
Class A Common Stock [Member] | Lemonaid Acquisition [Member]
Class Of Stock [Line Items]
Common Stock, Shares, Issued	26,825,241
Common stock shares subscribed	3,747,027
Class B Common Stock [Member]
Class Of Stock [Line Items]
Common Stock, Par value | $ / shares		$ 0.0001		$ 0.0001		$ 0.0001			$ 0.00001
Exchange Ratio		2.293698169				2.293698169
Common stock, shares authorized		350,000,000		350,000,000		350,000,000
Number of votes | Vote		10
Common Stock, Shares, Issued				246,970,302		246,970,302			103,816,708
Common Stock, Shares, Outstanding				246,970,302		246,970,302			103,816,708
Class B Common Stock [Member] | 23andMe, Inc [Member]
Class Of Stock [Line Items]
Common Stock, Par value | $ / shares		$ 0.00001
Class B Common Stock [Member] | VG Acquisition Sponsor LLC [Member]
Class Of Stock [Line Items]
Common Stock, Shares, Outstanding			3,814,125
Common Class C [Member]
Class Of Stock [Line Items]
Common Stock, Shares, Outstanding				0		0
Maximum [Member]
Class Of Stock [Line Items]
Class of warrants or rights redemption price per warrant | $ / shares	$ 0.10
Minimum [Member]
Class Of Stock [Line Items]
Class of warrants or rights redemption price per warrant | $ / shares	$ 0.10
Additional Paid-in Capital [Member]
Class Of Stock [Line Items]
Change in fair value of warrant liabilities | $	$ 42,400
Share Price Less Than Dollar Eighteen And Greater Than Or Equals To Ten Point Zero Zero | Class A Common Stock [Member] | Public Warrants
Class Of Stock [Line Items]
Exercise price | $ / shares				$ 0.10		$ 0.10
Share Redemption Trigger Price | $ / shares				10.00		$ 10.00
Class of warrants redemption notice period						30 days
Share Price Less Than Dollar Eighteen And Greater Than Or Equals To Ten Point Zero Zero | Minimum [Member] | Class A Common Stock [Member] | Public Warrants
Class Of Stock [Line Items]
Exercise price | $ / shares				18.00		$ 18.00
Share Price Equals Or Exceeds Dollar Eighteen | Class A Common Stock [Member] | Public Warrants
Class Of Stock [Line Items]
Exercise price | $ / shares				0.01		$ 0.01
Class of Warrant or Right Redemption Threshold Consecutive Trading Days						20 days
Class of Warrant or Right Redemption Threshold Trading Days						30 days
Share Redemption Trigger Price | $ / shares				$ 18.00		$ 18.00
Class of warrants redemption notice period						30 days