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Segment (Tables)
6 Months Ended
Jun. 30, 2025
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
The components of segment profit or loss were as follows (in millions):
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Revenue
$$— $$— 
Less:
Cost of revenue
—  
Personnel expenses112 108 227 212 
Other operating expenses59 52 121 105 
Other segment items (a)
26 22 57 30 
Net loss$(201)$(182)$(409)$(347)
(a) Other segment items include stock-based compensation expense, change in fair value of derivative liabilities, and other income (expense), net.