Stockholders’ deficit and stock-based compensation - Convertible Preferred Stock (Details)	3 Months Ended
	Mar. 31, 2022 shares	Feb. 07, 2021
Class of Stock [Line Items]
Conversion Ratio
Series A redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Series B redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Series C redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Series C-1 redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Series C-2 redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Series D redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Series D-1 redeemable convertible preferred stock
Class of Stock [Line Items]
Conversion Ratio	1.2135
Class A Common Stock
Class of Stock [Line Items]
Conversion Ratio		1.2135
Preferred Stock
Class of Stock [Line Items]
Shares converted (in shares)	66,927,034
Preferred Stock | Series A redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	7,363,856
Preferred Stock | Series B redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	11,090,568
Preferred Stock | Series C redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	18,581,768
Preferred Stock | Series C-1 redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	665,428
Preferred Stock | Series C-2 redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	7,675,798
Preferred Stock | Series D redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	13,266,042
Preferred Stock | Series D-1 redeemable convertible preferred stock
Class of Stock [Line Items]
Shares converted (in shares)	8,283,574
Common Stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	81,215,955
Common Stock | Series A redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	8,936,039
Common Stock | Series B redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	13,458,404
Common Stock | Series C redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	22,548,975
Common Stock | Series C-1 redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	807,497
Common Stock | Series C-2 redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	9,314,581
Common Stock | Series D redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	16,098,342
Common Stock | Series D-1 redeemable convertible preferred stock
Class of Stock [Line Items]
Shares Issued upon Conversion (in shares)	10,052,117