v3.26.3
Cost of revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Revenue [Line Items]    
Electricity $ 21 $ 76
Employee benefits 14 4
Other direct expenses 11 1
Total cost of revenue 46 81
Total AI Cloud    
Disaggregation of Revenue [Line Items]    
Electricity 7 0
Employee benefits 12 1
Other direct expenses 9 0
Total cost of revenue 28 1
AI Cloud Services    
Disaggregation of Revenue [Line Items]    
Electricity 3 0
Employee benefits 9 1
Other direct expenses 5 0
Total cost of revenue 17 1
AI Cloud Lease    
Disaggregation of Revenue [Line Items]    
Electricity 4 0
Employee benefits 3 0
Other direct expenses 4 0
Total cost of revenue 11 0
Bitcoin Mining    
Disaggregation of Revenue [Line Items]    
Electricity 14 76
Employee benefits 2 3
Other direct expenses 2 1
Total cost of revenue $ 18 $ 80