CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 55	$ 0	$ 0
Cost of revenues	520	0	0
Gross profit	(465)	0	0
Operating expenses
Research and development	1,850	766	301
Selling, general, and administrative	1,242	255	108
Other expenses (Note 2)	663	0	0
Total operating expenses	3,755	1,021	409
Loss from operations	(4,220)	(1,021)	(409)
Interest income	3	10	18
Interest expense	(29)	(8)	(34)
Loss on convertible notes, net	(441)	0	0
Other (expense) income, net	(1)	1	(1)
Loss before income taxes	(4,688)	(1,018)	(426)
Provision for income taxes	0	0	0
Net loss	(4,688)	(1,018)	(426)
Net loss attributable to common stockholders, basic (in shares)	(4,688)	(1,019)	(426)
Net loss attributable to common stockholders, diluted (in shares)	$ (4,688)	$ (1,019)	$ (426)
Net loss per share attributable to common stockholders, basic (in USD per share)	$ (22.98)	$ (10.09)	$ (4.35)
Net loss per share attributable to common stockholders, diluted (in USD per share)	$ (22.98)	$ (10.09)	$ (4.35)
Weighted average common shares outstanding - basic (in shares)	204	101	98
Weighted average common shares outstanding - diluted (in shares)	204	101	98