Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,999)	$ 36	$ (1,757)	$ (38)
Other comprehensive income (loss):
Net unrealized gain (loss) on available-for-sale marketable securities, net of tax	0	0	2	(3)
Change in foreign currency translation adjustments	0	(6)	1	(7)
Total other comprehensive income (loss)	0	(6)	3	(10)
Comprehensive income (loss)	$ (1,999)	$ 30	$ (1,754)	$ (48)