v3.26.1
Pension plan obligations (Details 2) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Actuarial gains/(losses) on obligations R$ (238,985) R$ 827,631
Actuarial gains/(losses) recorded as other comprehensive income 34,539 (549,389)
Asset ceiling (132,244)
Total gains/(losses) (204,446) 145,998
Deferred income tax and social contribution - G1 Plan 33,835 (3,671)
Valuation adjustments to equity (170,611) 142,327
G 1 Plan [Member]    
IfrsStatementLineItems [Line Items]    
Actuarial gains/(losses) on obligations (134,691) 692,430
Actuarial gains/(losses) recorded as other comprehensive income 34,539 (549,389)
Asset ceiling (132,244)
Total gains/(losses) (100,152) 10,797
Deferred income tax and social contribution - G1 Plan 33,835 (3,671)
Valuation adjustments to equity (66,317) 7,126
G 0 Plan [Member]    
IfrsStatementLineItems [Line Items]    
Actuarial gains/(losses) on obligations (104,294) 135,201
Actuarial gains/(losses) recorded as other comprehensive income
Asset ceiling
Total gains/(losses) (104,294) 135,201
Deferred income tax and social contribution - G1 Plan
Valuation adjustments to equity R$ (104,294) R$ 135,201