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Stockholders' Equity (Deficit) - Common Stock Reserved for Future Issuance (Details) - shares	Dec. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	106,320,711	191,849,299
2021 Equity Incentive Plan [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	32,797,245	0
2021 Equity Incentive Plan [Member] | Stock Options [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	22,500	0
2021 Equity Incentive Plan [Member] | RSUs [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	2,938,968	0
Equity Incentives Plan 20214 [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	0	4,722,481
Equity Incentives Plan 20214 [Member] | Stock Options [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	61,903,883	71,213,150
Equity Incentives Plan 20214 [Member] | RSUs [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	3,495,540	0
2021 Employee Stock Purchase Plan [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	5,162,575	0
Convertible Founder Stock [Member]
Class Of Stock [Line Items]
Convertible founder stock (in shares)	0	635,818
Series A Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock reserved for issuance (in shares)	0	34,911,252
Series B Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock reserved for issuance (in shares)	0	24,948,780
Series C Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock reserved for issuance (in shares)	0	18,657,756
Series D Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock reserved for issuance (in shares)	0	12,106,303
Series E Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock reserved for issuance (in shares)	0	24,653,759

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Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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