General form of registration statement for all companies including face-amount certificate companies

Net Loss Per Share Attributable to Common Stockholders - Summary Of Diluted Net Loss Per Share Attributable To Common Stockholders (Details)

v3.22.2
Net Loss Per Share Attributable to Common Stockholders - Summary Of Diluted Net Loss Per Share Attributable To Common Stockholders (Details) - shares
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 126,192,489 121,959,255 124,530,258 116,192,153 89,267,475
Convertible Preferred Stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 98,029,647 98,029,647 98,029,647 98,029,647 72,685,196
Common stock options          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 21,845,756 22,273,364 23,708,957 15,925,992 15,466,163
Restricted stock units          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2,741,646   1,511,191 0 0
Convertible preferred stock warrants          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 625,629 625,629 625,629 625,629 561,851
Common stock warrants          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 585,321 561,851 585,321 561,851 531,965
Shares subject to repurchase          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 14,063 468,764 69,513 1,049,034 22,300
Contingent Convertible Preferred Stock [Member]          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2,350,427