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Contract assets (Details Narrative) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Contract assets [abstract]      
Contract assets,includes leases R$ 276,893 R$ 276,893  
foreign currency exchange effects in the contract asset 622,803 300,792 R$ 238,330
Construction margin 109,369 98,402 R$ 86,477
Contracts assets R$ 62,599 R$ 67,714