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Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Notes and other explanatory information [abstract]    
Crude oil $ 2,645 $ 3,375
Oil products 2,161 2,196
Intermediate products 424 635
Natural gas and Liquefied Natural Gas (LNG) 101 78
Biofuels 22 13
Fertilizers 1 1
Total products 5,354 6,298
Materials, supplies and others 1,356 1,383
Total $ 6,710 $ 7,681