v3.26.1
Taxes (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Notes and other explanatory information [abstract]    
Balance at beginning of period, Assets $ 8,244 $ 9,565
Balance at beginning of period, Liabilities 445 870
Balance at beginning of period, Deferred taxes net 7,799 8,695
Taxes losses carryforward, Assets (2,484) 937
Taxes losses carryforward, Liabilities
Taxes losses carryforward, Deferred taxes net (2,484) 937
Provision for asset retirement obligations and other liabilities, Assets (281) (361)
Provision for asset retirement obligations and other liabilities, Liabilities 77 18
Provision for asset retirement obligations and other liabilities, Deferred taxes net (358) (379)
Fair value of financial instruments, Assets (387) 393
Fair value of financial instruments, Liabilities
Fair value of financial instruments, Deferred taxes net (387) 393
Fair value of intangibles and property, plant and equipment in business combination, Assets
Fair value of intangibles and property, plant and equipment in business combination, Liabilities (608) (397)
Fair value of intangibles and property, plant and equipment in business combination, Deferred taxes net 608 397
Other, Assets (116) (61)
Other, Liabilities 10
Other, Deferred taxes net (126) (61)
Effect in income statement, Assets (3,268) 908
Effect in income statement, Liabilities (521) (379)
Effect in income statement, Deferred taxes net (2,747) 1,287
Employee post-retirement obligation, Assets 7 (20)
Employee post-retirement obligation, Liabilities 9 26
Employee post-retirement obligation, Deferred taxes net (2) (46)
Fair value of financial instruments, Assets   (1)
Fair value of financial instruments, Liabilities  
Fair value of financial instruments, Deferred taxes net   (1)
Other comprehensive income, Assets 7 (21)
Other comprehensive income, Liabilities 9 26
Other comprehensive income, Deferred taxes net (2) (47)
Transfers between assets and liabilities, Assets 430 (250)
Transfers between assets and liabilities, Liabilities 430 (250)
Transfer between assets and liabilities, Deferred taxes net
Translation adjustment, Assets 914 (1,953)
Translation adjustment, Liabilities 60 (130)
Translation adjustment, Deferred taxes net 854 (1,823)
Incorporations, acquisitions and divestments, Assets (9) (5)
Incorporations, acquisitions and divestments, Liabilities (316) 308
Incorporations, acquisitions and divestments, Deferred taxes net 307 (313)
Balance at ending of period, Assets 6,318 8,244
Balance at ending of period, Liabilities 107 445
Balance at ending of period, Deferred taxes net $ 6,211 $ 7,799