v3.26.1
Income tax and social contribuition (Details 1) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets R$ 86,979 R$ 95,872
Deferred tax liabilities 1,793,638 1,790,362
Tax losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred Income Tax And Social Contribution 42,036 54,236
Deferred tax expense (income) recognised in profit or loss (32,440) (33,664)
Deferred tax expense (income) recognised in OCI 0 0
Other components of deferred tax expense (income) 0 21,464
Deferred Income Tax And Social Contribution 9,596 42,036
Tax credit    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred Income Tax And Social Contribution (6,744) (4,496)
Deferred tax expense (income) recognised in profit or loss (2,690) (2,248)
Deferred tax expense (income) recognised in OCI 0 0
Other components of deferred tax expense (income) 0 0
Deferred Income Tax And Social Contribution (9,434) (6,744)
Technological Inovation    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred Income Tax And Social Contribution (863,411) (729,868)
Deferred tax expense (income) recognised in profit or loss (168,116) (131,503)
Deferred tax expense (income) recognised in OCI 0 0
Other components of deferred tax expense (income) 0 (2,040)
Deferred Income Tax And Social Contribution (1,031,527) (863,411)
Other Temporary Differences Assets [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred Income Tax And Social Contribution 479,243 484,744
Deferred tax expense (income) recognised in profit or loss 193,547 (48,690)
Deferred tax expense (income) recognised in OCI 62,110 44,442
Other components of deferred tax expense (income) 2,363 (1,253)
Deferred Income Tax And Social Contribution 737,263 479,243
Other Temporary Differences - Liability    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred Income Tax And Social Contribution (1,345,614) (1,537,847)
Deferred tax expense (income) recognised in profit or loss (66,943) 192,147
Deferred tax expense (income) recognised in OCI 0 0
Other components of deferred tax expense (income) 0 86
Deferred Income Tax And Social Contribution (1,412,557) (1,345,614)
Deferred Tax Liability Asset    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred Income Tax And Social Contribution (1,694,490) (1,733,231)
Deferred tax expense (income) recognised in profit or loss (76,642) (23,958)
Deferred tax expense (income) recognised in OCI 62,110 44,442
Other components of deferred tax expense (income) 2,363 18,257
Deferred Income Tax And Social Contribution (1,706,659) R$ (1,694,490)
Deferred tax assets 86,979  
Deferred tax liabilities R$ 1,793,638