Redeemable Convertible Preferred Stock	9 Months Ended
	Oct. 31, 2020
Temporary Equity Disclosure [Abstract]
Redeemable Convertible Preferred Stock	Redeemable Convertible Preferred StockUpon completion of the IPO, all shares of the Company’s redeemable convertible preferred stock outstanding, totaling 182,271,099, were automatically converted into an equivalent number of shares of Class B common stock on a one-to-one basis and their carrying value of $1.4 billion was reclassified into stockholders’ equity. As of October 31, 2020, there were no shares of redeemable convertible preferred stock issued and outstanding.