Redeemable Convertible Preferred Stock - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) shares	Jan. 31, 2021 USD ($) shares	Jan. 31, 2022 shares	Jan. 31, 2020 shares	Jan. 31, 2019 shares
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)		(182,271,099)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering | $		$ 1,415,047
Redeemable convertible preferred stock, shares issued (in shares)		0	0
Redeemable convertible preferred stock, shares outstanding (in shares)		0	0	169,921,272	168,309,042
Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	(182,271,099)
Class B Common Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	182,271,099
Conversion ratio	1
Conversion of redeemable convertible preferred stock to common stock upon initial public offering | $	$ 1,400,000