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Inventories (Tables)
 6 Months Ended
Jun. 30, 2024
Notes and other explanatory information [abstract]  
Schedule of inventories
   
  06.30.2024 12.31.2023
Crude oil 3,033 3,375
Oil products 2,250 2,196
Intermediate products 483 635
Natural gas and Liquefied Natural Gas (LNG) 109 78
Biofuels 13 13
Fertilizers 1 1
Total products 5,889 6,298
Materials, supplies and others 1,450 1,383
Total 7,339 7,681