Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended
		Jun. 16, 2021 Vote $ / shares shares	Feb. 04, 2021 $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Mar. 31, 2022 $ / shares shares
Class Of Stock [Line Items]
Common Stock, Par value | $ / shares				$ 0.0001		$ 0.0001		$ 0.0001
Description of convertible common stock		Each share of Class B common stock is convertible into one share of Class A common stock at any time at the option of the holder and automatically converts into one share of Class A common stock upon transfer
Common stock, shares authorized		1,490,000,000
Preferred stock, shares authorized				10,000,000		10,000,000
Preferred stock, par value | $ / shares				$ 0.0001		$ 0.0001
Proceeds from issuance of common stock under employee stock purchase plan | $						$ 3,238	$ 0
Change in fair value of warrant liabilities | $				$ 0	$ 3,695	$ 0	$ 32,989
Founder Shares [Member]
Class Of Stock [Line Items]
Shares Restricted for Transfer								12,713,750
VG Acquisition Sponsor LLC [Member]
Class Of Stock [Line Items]
Lockup Period						7 years
Earn Out Shares, Percentage			50.00%
Class A Common Stock [Member]
Class Of Stock [Line Items]
Common stock, shares authorized		1,140,000,000		1,140,000,000		1,140,000,000		1,140,000,000
Number of votes | Vote		1
Common Stock, Shares, Issued	[1],[2]			288,629,645		288,629,645		228,174,718
Common Stock, Shares, Outstanding	[1],[2]			288,629,645		288,629,645		228,174,718
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member]
Class Of Stock [Line Items]
Earnout Shares			3,814,125
Trading days			20 days
Number Of Trading Days			20 days
Number of trading days after commencing			30 days
Class B Common Stock [Member]
Class Of Stock [Line Items]
Common Stock, Par value | $ / shares		$ 0.0001
Common stock, shares authorized		350,000,000		350,000,000		350,000,000		350,000,000
Number of votes | Vote		10
Common Stock, Shares, Issued				168,531,838		168,531,838		220,637,603
Common Stock, Shares, Outstanding				168,531,838		168,531,838		220,637,603
Maximum [Member] | VG Acquisition Sponsor LLC [Member]
Class Of Stock [Line Items]
Share Price Thresholds Release From Lock Up | $ / shares			$ 15.00
Minimum [Member] | Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member]
Class Of Stock [Line Items]
Share Price Thresholds Release From Lock Up | $ / shares			$ 12.50

[1] As of December 31, 2022 and March 31, 2022, the Class A common stock included 3,814,125 shares held by VGAC founders (“Earn-Out Shares”) that are subject to a lock-up of seven years from the Closing Date. The lock-up has an early release effective (i) with respect to 50% of the Earn-Out Shares, upon the closing price of the Company’s Class A common stock equaling or exceeding $12.50 per share for any 20 trading days within any 30-trading-day period, and (ii) with respect to the other 50% of the Earn-Out Shares, upon the closing price of the Company’s Class A common stock equaling or exceeding $15.00 per share for any 20 trading days within any 30-trading-day period; provided that the transfer restrictions applicable to the Earn-Out Shares will terminate on the date following the closing date on which the Company completes a liquidation, merger, amalgamation, capital stock exchange, reorganization, or other similar transaction that results in all of the Company’s public stockholders having the right to exchange their shares of Class A common stock for cash, securities, or other property (a “Liquidation Event”), if such Liquidation Event occurs prior to the date that the stock price thresholds referenced in (i) and (ii) are met. As of December 31, 2022, the Company did not meet any earn out thresholds. The Earn-Out Shares are issued and outstanding Class A common shares that cannot be forfeited, and as such meet the criteria for equity classification in accordance with ASC 505, Equity.

[2] As of March 31, 2022, the Class A common stock included 12,713,750 shares held by VGAC founders (“Lock-Up Shares”) that would be released from the lock-up one year after the Closing Date. In August 2022, following the one-year anniversary of the Closing Date, the Lock-Up Shares were released and distributed to certain VGAC founders.