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Segment (Tables)
 6 Months Ended
Jun. 30, 2026
Segment Reporting [Abstract]  
Schedule of Segment Profit or Loss
The components of segment profit or loss were as follows (in millions):
Three Months Ended
June 30,		Six Months Ended
June 30,
2026202520262025
Revenue
$2 $1 $3 $1 
Less:
Cost of revenue
7 5 12 5 
Personnel expenses122 112 247 227 
Other operating expenses79 59 148 121 
Other segment items (a)
64 26 89 57 
Net loss$(270)$(201)$(493)$(409)
(a) Other segment items include stock-based compensation expense, change in fair value of derivative liabilities, and other income (expense), net