Supplemental cash flow information (Details) - BRL (R$) R$ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Supplemental Cash Flow Information | |||
| Total additions to property, plant and equipment (Note 16 (b)) | R$ 291,990 | R$ 100,728 | |
| Total additions to contract assets (Note 13) | 16,684,564 | 6,675,914 | 6,026,053 |
| Total additions to intangible assets (Note 14 (b)) | 3,207 | 2,862,651 | 258,473 |
| Items not affecting cash (see breakdown below) | (3,239,369) | (1,608,619) | (2,293,201) |
| Total additions to intangible assets and contract assets according to statement of cash flows | 13,740,392 | 8,030,674 | 3,991,325 |
| Investment and financing operations affecting intangible assets but not cash: | |||
| Interest capitalized in the period (Note 13 (a)) | 820,213 | 564,302 | 638,208 |
| Contractors payable | 2,418,615 | 748,088 | 419,457 |
| Performance agreements | 72,205 | 1,001,528 | |
| Right of use | 541 | 84,048 | 108,405 |
| Construction margin (Note 13) | 139,976 | 125,603 | |
| Total | R$ 3,239,369 | R$ 1,608,619 | R$ 2,293,201 |