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Redeemable convertible preferred stock - Narrative (Details) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 29, 2021 $ / shares shares | Dec. 31, 2021 $ / shares shares | Dec. 31, 2020 shares | Dec. 31, 2019 shares | Dec. 31, 2018 shares
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock converted into shares of common stock, conversion basis |  | 1 |  |  |
Redeemable convertible preferred stock, outstanding (in shares) |  | 0 | 85,391,338 | 79,472,483 | 79,472,483
Redeemable convertible preferred stock, issued (in shares) |  | 0 | 85,391,338 |  |
Series A-1 |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Issuance of convertible preferred stock, net of issuance costs (in shares) |  | 12,595 |  |  |
Redeemable convertible preferred stock, outstanding (in shares) |  |  | 15,132,282 |  |
Redeemable convertible preferred stock, issued (in shares) |  |  | 15,132,282 |  |
Voting percentage, term |  | 0.35 |  |  |
Series E |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Issuance of convertible preferred stock, net of issuance costs (in shares) |  |  | 2,569,043 |  |
Redeemable convertible preferred stock, outstanding (in shares) |  |  | 2,569,043 |  |
Redeemable convertible preferred stock, issued (in shares) |  |  | 2,569,043 |  |
Series F |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Issuance of convertible preferred stock, net of issuance costs (in shares) |  |  | 3,349,812 |  |
Redeemable convertible preferred stock, outstanding (in shares) |  |  | 3,349,812 |  |
Redeemable convertible preferred stock, issued (in shares) |  |  | 3,349,812 |  |
Voting percentage, term |  | 0.80 |  |  |
Series A Preferred Stock |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, outstanding (in shares) |  |  | 8,483,166 |  |
Redeemable convertible preferred stock, issued (in shares) |  |  | 8,483,166 |  |
Voting percentage, term |  | 0.35 |  |  |
Series D |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, outstanding (in shares) |  |  | 16,702,584 |  |
Redeemable convertible preferred stock, issued (in shares) |  |  | 16,702,584 |  |
Voting percentage, term |  | 0.60 |  |  |
IPO |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock converted into shares of common stock, conversion basis | 1 |  |  |  |
Sale of stock, term, less than (in USD per share) | $ / shares | $ 29.00 | $ 24.13 |  |  |
Common Stock | IPO |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock converted into shares of common stock (in shares) | 85,403,933 |  |  |  |

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- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 + Details
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- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + 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(27)(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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