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Financial assets and liabilities (Details 1) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Financial assets $ 4,746 $ 4,387
Financial liabilities 3,005 3,104
Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Financial liabilities 131 276
Participative Stockholders Debentures Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Financial liabilities 2,874 2,725
Financial Guarantees [Member]    
IfrsStatementLineItems [Line Items]    
Financial liabilities   103
Shorts Term Investments [Member]    
IfrsStatementLineItems [Line Items]    
Financial assets 51 61
Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Financial assets 815 538
Accounts Receivable Current [Member]    
IfrsStatementLineItems [Line Items]    
Financial assets 3,835 3,781
Investments In Equity Securities Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Financial assets 45 7
Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Financial assets 51 61
Level 1 of fair value hierarchy [member] | Shorts Term Investments [Member]    
IfrsStatementLineItems [Line Items]    
Financial assets 51 61
Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Financial assets 4,695 4,326
Financial liabilities 3,005 3,104
Level 2 of fair value hierarchy [member] | Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Financial liabilities 131 276
Level 2 of fair value hierarchy [member] | Participative Stockholders Debentures Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Financial liabilities 2,874 2,725
Level 2 of fair value hierarchy [member] | Financial Guarantees [Member]    
IfrsStatementLineItems [Line Items]    
Financial liabilities   103
Level 2 of fair value hierarchy [member] | Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Financial assets 815 538
Level 2 of fair value hierarchy [member] | Accounts Receivable Current [Member]    
IfrsStatementLineItems [Line Items]    
Financial assets 3,835 3,781
Level 2 of fair value hierarchy [member] | Investments In Equity Securities Noncurrent [Member]    
IfrsStatementLineItems [Line Items]    
Financial assets $ 45 $ 7