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Inventories (Tables)
 6 Months Ended
Jun. 30, 2025
Notes and other explanatory information [abstract]  
Schedule of inventories
   
  06.30.2025 12.31.2024
Crude oil 3,132 2,645
Oil products 2,441 2,161
Intermediate products 561 424
Natural gas and Liquefied Natural Gas (LNG) 127 101
Biofuels 28 22
Fertilizers 2 1
Total products 6,291 5,354
Materials, supplies and others 1,942 1,356
Total 8,233 6,710