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Suppliers and contractors (Details 1)
$ in Millions
Dec. 31, 2024
USD ($)
Notes and other explanatory information [abstract]  
Carrying amount of accounts payable included in the Arrangements of which suppliers have already received payment $ 1,343
Carrying amount of accounts payable included in the Arrangements of which suppliers have not yet received payment 6
Total carrying amount relating to Arrangements with suppliers and contractors $ 1,349