v3.26.1
Commitments and guarantees (Tables)
12 Months Ended
Dec. 31, 2025
Notes and other explanatory information [abstract]  
Schedule of guarantees
           
December 31, 2025 2024
  Guarantee Restricted cash Liability Guarantee Restricted cash Liability
Associates and joint ventures 233 210
Assets retirement obligations 1,134 1,091
  1,367 1,301