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Financial assets and liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Total current financial assets $ 9,458 $ 15,930
Non-current financial assets 1,495 1,363
Financial assets 10,953 17,293
Current financial liabilities 6,622 6,991
Non-current financial liabilities 17,791 18,568
Financial liabilities 24,413 25,559
Cash And Cash Equivalents Current [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 4,736 11,721
Short Term Investment [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 61 184
Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 342 111
Non-current financial assets 196 20
Current financial liabilities 90 243
Non-current financial liabilities 186 592
Accounts Receivable Current [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 4,319 3,914
Judicial Deposits [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 1,215 1,220
Restricted Cash [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 77 117
Investments In Equity Securities Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 7 6
Suppliers And Contractors Current [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 4,461 3,475
Loans And Borrowings Current [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 489 1,204
Non-current financial liabilities 12,223 12,578
Government Grant [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 416 760
Non-current financial liabilities 2,554 1,437
Other Financial Liabilities [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 400 393
Contract Liability [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 766 916
Participative Stockholders Debentures Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial liabilities 2,725 3,419
Financial Guarantees [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial liabilities 103 542
Amortized cost    
IfrsStatementLineItems [Line Items]    
Total current financial assets 5,274 12,424
Non-current financial assets 1,292 1,337
Financial assets 6,566 13,761
Current financial liabilities 6,532 6,748
Non-current financial liabilities 14,777 14,015
Financial liabilities 21,309 20,763
Amortized cost | Cash And Cash Equivalents Current [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 4,736 11,721
Amortized cost | Accounts Receivable Current [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 538 703
Amortized cost | Judicial Deposits [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 1,215 1,220
Amortized cost | Restricted Cash [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 77 117
Amortized cost | Suppliers And Contractors Current [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 4,461 3,475
Amortized cost | Loans And Borrowings Current [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 489 1,204
Non-current financial liabilities 12,223 12,578
Amortized cost | Government Grant [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 416 760
Non-current financial liabilities 2,554 1,437
Amortized cost | Other Financial Liabilities [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 400 393
Amortized cost | Contract Liability [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 766 916
Financial assets at fair value through profit or loss, category [member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 4,184 3,506
Non-current financial assets 196 20
Financial assets 4,380 3,526
Financial assets at fair value through profit or loss, category [member] | Short Term Investment [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 61 184
Financial assets at fair value through profit or loss, category [member] | Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 342 111
Non-current financial assets 196 20
Financial assets at fair value through profit or loss, category [member] | Accounts Receivable Current [Member]    
IfrsStatementLineItems [Line Items]    
Total current financial assets 3,781 3,211
Financial assets measured at fair value through other comprehensive income, category [member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 7 6
Financial assets 7 6
Financial assets measured at fair value through other comprehensive income, category [member] | Investments In Equity Securities Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial assets 7 6
Financial Liabilities At Fair Value Through Profit Or Loss Category Membe [Member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 90 243
Non-current financial liabilities 3,014 4,553
Financial liabilities 3,104 4,796
Financial Liabilities At Fair Value Through Profit Or Loss Category Membe [Member] | Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Current financial liabilities 90 243
Non-current financial liabilities 186 592
Financial Liabilities At Fair Value Through Profit Or Loss Category Membe [Member] | Participative Stockholders Debentures Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial liabilities 2,725 3,419
Financial Liabilities At Fair Value Through Profit Or Loss Category Membe [Member] | Financial Guarantees [Member]    
IfrsStatementLineItems [Line Items]    
Non-current financial liabilities $ 103 $ 542