Loans and borrowings (Details) - USD ($)
$ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
| IfrsStatementLineItems [Line Items] |
|
|
| Current liabilities |
$ 1,093
|
$ 518
|
| Non-current liabilities |
17,211
|
17,616
|
| Accrued charges |
$ 187
|
195
|
| Quoted In Secondary Market [Member] | Bond [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Borrowings, interest rate |
6.05%
|
|
| Current liabilities |
|
|
| Non-current liabilities |
$ 7,603
|
7,607
|
| Quoted In Secondary Market [Member] | Debentures [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Borrowings, interest rate |
7.63%
|
|
| Current liabilities |
$ 44
|
57
|
| Non-current liabilities |
$ 2,499
|
2,286
|
| Debt Contract Brazil [Member] | Tjlp Tr Ipca Igp M And Cdi [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Borrowings, interest rate |
10.13%
|
|
| Current liabilities |
$ 45
|
44
|
| Non-current liabilities |
$ 72
|
89
|
| Debt Contract Brazil [Member] | SOFR [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Non-current liabilities |
|
150
|
| Debt Contracts International Markets [Member] | Currencieswith Variable And Fixed Interest [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Borrowings, interest rate |
5.14%
|
|
| Current liabilities |
$ 800
|
205
|
| Non-current liabilities |
$ 6,497
|
6,944
|
| Debt Contracts International Markets [Member] | Fixed interest rate [member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Borrowings, interest rate |
5.50%
|
|
| Current liabilities |
$ 12
|
12
|
| Non-current liabilities |
$ 30
|
43
|
| Debt Contracts International Markets [Member] | Other Currencies With Variable Interest [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Borrowings, interest rate |
2.76%
|
|
| Current liabilities |
$ 5
|
5
|
| Non-current liabilities |
$ 510
|
$ 497
|