Recapitalization - Additional Information (Details)			12 Months Ended
	Jun. 16, 2021 USD ($) $ / shares shares	Feb. 04, 2021 $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) $ / shares shares	Dec. 22, 2021 shares
Business Acquisition [Line Items]
Proceeds from Issuance or Sale of Equity | $	$ 559,700,000
Common Stock, Par value | $ / shares			$ 0.0001	$ 0.0001
Reverse Recapitalization Percentage of Voting Interests Acquired	100.00%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $			$ 33,700,000	$ 33,726,000
Proceeds from issuance of common stock merger | $	$ 309,700,000
Restricted Stock Units [Member]
Business Acquisition [Line Items]
Shares conversion ratio	2.293698169
Founder shares [Member]
Business Acquisition [Line Items]
Shares restricted for transfer		12,713,750
Lock-up early release terms for the earn out shares, description		(i) one year after the Closing Date, or (ii) the date following the completion of the Business Combination on which the Company completes a liquidation, merger, share exchange, or other similar transaction that results in all of the stockholders having the right to exchange their ordinary shares for cash, securities, or other property. Notwithstanding the foregoing, if the closing price of the Company’s Class A common stock equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading-day period commencing at least 150 days after the Business Combination, 70% of the Founder Shares will be released from the lock-up.
VG Acquisition Sponsor LLC [Member]
Business Acquisition [Line Items]
Sponsor, Description		(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.
Earn-out shares, Percentage		50.00%
Lockup period for shares		7 years
PIPE [Member]
Business Acquisition [Line Items]
Proceeds from investment | $	$ 250,000,000.0
Class A Common Stock [Member]
Business Acquisition [Line Items]
Common Stock, Par value | $ / shares	$ 0.0001
Shares conversion ratio	2.293698169
Common Stock, Shares, Outstanding			293,020,474	228,174,718
Common Stock, Shares, Issued			293,020,474	228,174,718	6,016,327
Lock up for Class A common stock in connection with the Merger		180 days
Trading days		20 days
Number of trading days after commencing		30 days
Class A Common Stock [Member] | Restricted Stock Units [Member]
Business Acquisition [Line Items]
Shares conversion ratio	2.293698169
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member]
Business Acquisition [Line Items]
Common stock, Price Per Share | $ / shares		$ 10.00
Trading days		20 days
Number of trading days after commencing		30 days
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member] | Minimum [Member]
Business Acquisition [Line Items]
Share Price Thresholds Release From Lock Up | $ / shares		$ 12.50
Class A Common Stock [Member] | VG Acquisition Sponsor LLC [Member] | Maximum [Member]
Business Acquisition [Line Items]
Share Price Thresholds Release From Lock Up | $ / shares		$ 15.00
Class A Common Stock [Member] | PIPE [Member]
Business Acquisition [Line Items]
Common Stock, Shares, Issued	25,000,000
Aggregate gross proceeds of common stock | $	$ 250,000.0
Class A Common Stock [Member] | PIPE [Member] | The Anne Wojcicki Foundation [Member]
Business Acquisition [Line Items]
Common Stock, Shares, Issued	2,500,000
Class B Common Stock [Member]
Business Acquisition [Line Items]
Common Stock, Par value | $ / shares	$ 0.0001
Shares conversion ratio	2.293698169
Common Stock, Shares, Outstanding			168,179,488	220,637,603
Common Stock, Shares, Issued			168,179,488	220,637,603
Class B Common Stock [Member] | Founder shares [Member]
Business Acquisition [Line Items]
Percentage Shares Restricted For Transfer		70.00%
Class B Common Stock [Member] | VGAC [Member]
Business Acquisition [Line Items]
Acquired ownership percentage		30.00%
Class B Common Stock [Member] | VG Acquisition Sponsor LLC [Member]
Business Acquisition [Line Items]
Common Stock, Shares, Outstanding		3,814,125