CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenues (Note 2)	$ 874	$ 1,337	$ 3,236	$ 3,119
Cost of revenues	1,266	1,814	4,606	4,543
Gross profit	(392)	(477)	(1,370)	(1,424)
Operating expenses
Research and development	350	529	1,239	1,469
Selling, general, and administrative	427	434	1,419	1,265
Total operating expenses	777	963	2,658	2,734
Loss from operations	(1,169)	(1,440)	(4,028)	(4,158)
Interest income	95	126	302	391
Interest expense (Note 6)	(87)	(55)	(237)	(147)
Fair value gain (loss) on convertible note, net (Note 6)	60	0	(30)	0
Other income (expense), net	1	2	(8)	4
Loss before income taxes	(1,100)	(1,367)	(4,001)	(3,910)
Provision for income taxes	0	0	(2)	(1)
Net loss	(1,100)	(1,367)	(4,003)	(3,911)
Net loss attributable to common stockholders, basic	(1,100)	(1,367)	(4,003)	(3,911)
Net loss attributable to common stockholders, diluted	$ (1,100)	$ (1,367)	$ (4,003)	$ (3,911)
Net loss per share attributable to Class A and Class B common stockholders, basic (in dollars per share)	$ (1.08)	$ (1.44)	$ (4.01)	$ (4.15)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in dollars per share)	$ (1.08)	$ (1.44)	$ (4.01)	$ (4.15)
Weighted-average common shares outstanding, basic (in shares)	1,014	952	998	942
Weighted-average common shares outstanding, diluted (in shares)	1,014	952	998	942