v3.26.1
Segment (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Segment Reporting [Abstract]    
Number of reportable segments | segment 1  
Number of operating segments | segment 1  
Segment Reporting Information [Line Items]    
Revenue $ 1 $ 0
Cost of revenue 6 0
Net loss (223) (208)
Reportable Segment    
Segment Reporting Information [Line Items]    
Revenue 1 0
Cost of revenue 5 0
Personnel expenses 125 115
Other operating expenses 69 62
Other segment items 25 31
Net loss $ (223) $ (208)