Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net loss attributable to ordinary shareholders — basic	$ (334,620)	$ (443,286)	$ (704,471)
Net loss attributable to ordinary shareholders — diluted	$ (334,620)	$ (443,286)	$ (704,471)
Denominator:
Weighted average number of ordinary shares - basic (in shares)	966,394,130	958,067,140	929,921,120
Weighted average number of ordinary shares - diluted (in shares)	966,394,130	958,067,140	929,921,120
Net loss per share — basic (in dollars per share)	$ (0.35)	$ (0.46)	$ (0.76)
Net loss per share — diluted (in dollars per share)	$ (0.35)	$ (0.46)	$ (0.76)