Convertible Preferred Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2021	Feb. 28, 2021	Mar. 31, 2020
Class Of Stock [Line Items]
Convertible preferred stock shares issued	134,113,000			0
Outstanding shares of convertible preferred stock converted into shares of common stock					134,100,000
Convertible preferred stock outstanding	134,113,000			0
Series A-1 Convertible Preferred Stock
Class Of Stock [Line Items]
Convertible preferred stock shares issued			11,500,000
Share price			$ 4.00
Gross proceeds from issuance of convertible preferred stock			$ 45.9
Series A-2 Convertible Preferred Stock
Class Of Stock [Line Items]
Convertible preferred stock shares issued		56,000,000.0
Share price		$ 4.00
Gross proceeds from issuance of convertible preferred stock		$ 224.0
Series B Convertible Preferred Stock
Class Of Stock [Line Items]
Convertible preferred stock shares issued	27,200,000
Share price	$ 16.00
Gross proceeds from issuance of convertible preferred stock	$ 435.6
Convertible Preferred Stock
Class Of Stock [Line Items]
Convertible preferred stock outstanding	134,113,000	106,890,000		0		106,890,000