Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands								1 Months Ended	12 Months Ended
	Feb. 06, 2023 USD ($)	Dec. 22, 2021 USD ($) shares	Nov. 22, 2021 $ / shares	Nov. 01, 2021 shares	Jul. 08, 2021 d shares	Jun. 16, 2021 Vote $ / shares shares	Jun. 16, 2021 Vote $ / shares shares	Nov. 30, 2021 shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) shares	Jun. 15, 2021 class_of_stock shares	Mar. 31, 2021 shares	Feb. 04, 2021 shares
Class Of Stock [Line Items]
Preferred stock, convertible, conversion ratio												1
Number of classes of authorized common stock | class_of_stock												3
Common stock, shares authorized (in shares)						1,490,000,000	1,490,000,000
Common stock, par value (in usd per share) | $ / shares						$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001
Common stock, convertible, conversion ratio						1	1
Warrant redemption, trading days | d					10
Fractional shares issued upon exercise of warrants (in shares)					0
Class of warrants or rights redemption price per warrant (in usd per share) | $ / shares			$ 0.10
Redeemed warrants (in shares)		1,164,142
Warrants outstanding (in shares)									0	0
Change in fair value of warrant liabilities | $									$ 0	$ 0	$ (32,989)
Preferred stock, shares authorized (in shares)									10,000,000	10,000,000
Preferred stock, par value (in usd per share) | $ / shares									$ 0.0001	$ 0.0001
Preferred stock, shares issued (in shares)									0	0
Preferred stock, shares outstanding (in shares)									0	0
Cowen And Company LLC
Class Of Stock [Line Items]
Commission fees payable, percentage	3.00%
At-the Market Offering Program
Class Of Stock [Line Items]
Sale of stock aggregate (up to) | $	$ 150,000
Public Warrants and Private Placement Warrants
Class Of Stock [Line Items]
Warrants exercised (in shares)		23,901,466
Percentage of outstanding warrants exercised		95.00%
Maximum
Class Of Stock [Line Items]
Class of warrants or rights redemption price per warrant (in usd per share) | $ / shares			0.10
Additional Paid-In Capital
Class Of Stock [Line Items]
Change in fair value of warrant liabilities | $		$ 42,400								$ 33,000
Redeemable Convertible Preferred Stock
Class Of Stock [Line Items]
Redeemable convertible preferred stock, shares, outstanding (in shares)									0	0	0
Common Stock Class B
Class Of Stock [Line Items]
Exchange ratio						2.293698169	2.293698169
Convertible preferred stock, shares issued (in shares)													209,181,855
Common stock, shares outstanding (in shares)									166,724,586	168,179,488
Common stock, shares authorized (in shares)						350,000,000	350,000,000		350,000,000	350,000,000
Common stock, par value (in usd per share) | $ / shares						$ 0.0001	$ 0.0001
Number of votes | Vote						10	10
Common stock, shares issued (in shares)									166,724,586	168,179,488
Common Stock Class B | VG Acquisition Sponsor LLC
Class Of Stock [Line Items]
Common stock, shares outstanding (in shares)														3,814,125
Common Stock Class C
Class Of Stock [Line Items]
Common stock, shares outstanding (in shares)												0
Common Stock Class A
Class Of Stock [Line Items]
Exchange ratio						2.293698169
Common stock, shares outstanding (in shares)									323,394,807	293,020,474
Common stock, shares authorized (in shares)						1,140,000,000	1,140,000,000		1,140,000,000	1,140,000,000
Common stock, par value (in usd per share) | $ / shares						$ 0.0001	$ 0.0001
Number of votes | Vote						1	1
Warrants exercise price (in usd per share) | $ / shares			11.50
Exchange ratio for shares of Class A common stock per warrant | $ / shares			$ 0.2516
Common stock, shares issued (in shares)		6,016,327							323,394,807	293,020,474
Common Stock Class A | Lemonaid Health, Inc.
Class Of Stock [Line Items]
Consideration transferred, common stock (in shares)				26,825,241
Common stock granted subject to vest (in shares)				3,747,027				3,747,027
Common Stock Class A | Private Placement Warrants
Class Of Stock [Line Items]
Number of days after the completion of an initial business combination						30 days
Class of warrants or rights redemption price per warrant (in usd per share) | $ / shares						$ 10.00	$ 10.00
Trading days						10 days
Common Stock Class A | Public Warrants
Class Of Stock [Line Items]
Warrant redemption, stock price trigger (in usd per share) | $ / shares						$ 18.00
Common Stock Class A | VG Acquisition Sponsor LLC
Class Of Stock [Line Items]
Warrants expiration						5 years	5 years
Common Stock Class A | VG Acquisition Sponsor LLC | Private Placement Warrants
Class Of Stock [Line Items]
Warrants assumed (in shares)						8,113,999	8,113,999
Warrants exercise price (in usd per share) | $ / shares						$ 11.50	$ 11.50
Common Stock Class A | VG Acquisition Sponsor LLC | Public Warrants
Class Of Stock [Line Items]
Warrants assumed (in shares)						16,951,609	16,951,609
Warrants exercise price (in usd per share) | $ / shares						$ 11.50	$ 11.50
Common Stock Class A | Share Price Equals Or Exceeds Dollar Eighteen | Public Warrants
Class Of Stock [Line Items]
Warrants exercise price (in usd per share) | $ / shares						0.01	0.01
Warrant redemption, stock price trigger (in usd per share) | $ / shares						$ 18.00
Class of warrants redemption notice period						30 days
Threshold consecutive trading days						20 days
Trading days						30 days
Common Stock Class A | Share Price Less Than Dollar Eighteen And Greater Than Or Equals To Ten Point Zero Zero | Public Warrants
Class Of Stock [Line Items]
Warrants exercise price (in usd per share) | $ / shares						$ 0.10	0.10
Warrant redemption, stock price trigger (in usd per share) | $ / shares						$ 10.00
Class of warrants redemption notice period						30 days
Common Stock Class A | Share Price Less Than Dollar Eighteen And Greater Than Or Equals To Ten Point Zero Zero | Minimum | Public Warrants
Class Of Stock [Line Items]
Warrants exercise price (in usd per share) | $ / shares						$ 18.00	$ 18.00