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Loans, borrowings, leases, cash and cash equivalents and short-term investments - Total debt (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |  |
Non-current portion of non-current borrowings. gross |  | $ 11,704 | $ 10,874
Current borrowings. gross |  | 713 | 307
Accrued charges |  | $ 156 | 147
Quoted In Secondary Market [Member] | Bond [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1] | 6.02% |
Non-current portion of non-current borrowings. gross |  | $ 7,157 | 6,157
Quoted In Secondary Market [Member] | Debentures [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1],[2] | 10.07% |
Current borrowings. gross | [2] | $ 95 | 47
Quoted In Secondary Market [Member] | Eurobonds [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Non-current portion of non-current borrowings. gross | [2] | 132 | 186
Debt Contract Brazil [Member] | U S D [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Non-current portion of non-current borrowings. gross |  | 4,112 | 4,212
Current borrowings. gross |  | 400 | 54
Debt Contract Brazil [Member] | Currencies Other Than U S Dollar And Brazilian Real [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Non-current portion of non-current borrowings. gross |  | $ 9 | 9
Debt Contract Brazil [Member] | Tjlp Tr Ipca Igp M And Cdi [Member] | B R L [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1],[3] | 10.62% |
Non-current portion of non-current borrowings. gross | [3] | $ 226 | 232
Current borrowings. gross | [3] | $ 50 | 46
Debt Contract Brazil [Member] | Fixed interest rate [member] | B R L [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1],[3] | 3.04% |
Current borrowings. gross | [3] |  | 2
Debt Contract Brazil [Member] | Fixed interest rate [member] | Currencies Other Than U S Dollar And Brazilian Real [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Non-current portion of non-current borrowings. gross |  | $ 68 | 78
Current borrowings. gross |  | $ 12 | $ 11
Debt Contracts International Markets [Member] | U S D [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1] | 5.37% |
Debt Contracts International Markets [Member] | Currencies Other Than U S Dollar And Brazilian Real [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1] | 4.10% |
Debt Contracts International Markets [Member] | Fixed interest rate [member] | Currencies Other Than U S Dollar And Brazilian Real [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Borrowings, interest rate | [1] | 3.87% |
[1] | In order to determine the average interest rate for debt contracts with floating rates, the Company used the rate applicable as of June 30, 2023.
[2] | The Company has debentures in Brazil obtained for the Company's infrastructure investment projects.
[3] | The Company entered into derivatives to mitigate the exposure to cash flow variations of all floating rate debt contracted in Brazil, resulting in an average cost of 3.42% per year in US$.

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