Consolidated Balance Sheets (Parenthetical)	12 Months Ended
	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 $ / shares shares
Statement Of Financial Position [Abstract]
Preferred stock par value | $ / shares	$ 0.001	$ 0.001
Preferred stock shares authorized	100,000,000	100,000,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock par value | $ / shares	$ 0.001	$ 0.001
Common stock shares authorized	2,000,000,000	2,000,000,000
Common stock shares issued	960,000,000	905,000,000
Common stock shares outstanding	960,000,000	905,000,000
Stock split description	five-for-one stock split effected in the form of a stock dividend in August 2020
Stock split ratio	5