Suppliers and contractors (Details Narrative) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Notes and other explanatory information [abstract] | ||||
| Interest on supplier finance arrangements | $ 43 | $ 44 | $ 82 | $ 90 |