CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (42)	$ (46)	$ (290)	$ (401)
Other comprehensive income (loss):
Foreign currency translation adjustments	1	(1)	1	1
Net unrealized gain on available-for-sale investments	0	0	0	1
Comprehensive loss	$ (41)	$ (47)	$ (289)	$ (399)