Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Numerator:
Net loss	$ (40,727)	$ (48,438)	$ (80,277)	$ (53,471)	$ (89,165)	$ (133,748)
Denominator:
Weighted-average number of ordinary shares - basic (in shares)	1,091,933,150		975,937,790		1,086,413,130	974,541,780
Weighted-average number of ordinary shares - diluted (in shares)	1,091,933,150		975,937,790		1,086,413,130	974,541,780
Net loss per share - basic (in dollars per share)	$ (0.04)		$ (0.08)		$ (0.08)	$ (0.14)
Net loss per share - diluted (in dollars per share)	$ (0.04)		$ (0.08)		$ (0.08)	$ (0.14)