Trade accounts receivables - Breakdown of balances (Details) - Trade accounts receivable - BRL (R$) R$ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Trade Accounts Receivables [Line Items] | ||
| Current financial assets | R$ 6,214,486 | R$ 6,560,607 |
| Factoring of receivables [member] | ||
| Trade Accounts Receivables [Line Items] | ||
| Current financial assets | 5,981,680 | 6,616,450 |
| Expected credit losses | ||
| Trade Accounts Receivables [Line Items] | ||
| Current financial assets | (86,268) | (131,548) |
| Country of domicile | Accumulated cost | Third party | ||
| Trade Accounts Receivables [Line Items] | ||
| Current financial assets | 1,779,931 | 1,918,437 |
| Country of domicile | Accumulated cost | Total for all related parties | ||
| Trade Accounts Receivables [Line Items] | ||
| Current financial assets | 59,219 | 68,209 |
| Foreign countries | Accumulated cost | Third party | ||
| Trade Accounts Receivables [Line Items] | ||
| Current financial assets | R$ 4,461,604 | R$ 4,705,509 |