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Business Combination - Acquired companies net revenue and profit (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date R$ 0 R$ 223,138 R$ 540,345
Profit (loss) of acquiree since acquisition date 0 28,541 116,161
First Response Inc      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 106,978
Profit (loss) of acquiree since acquisition date 0 0 38,159
Dracares Apoio Marítimo e Portuário Ltda. and MB Transportes Aquaviários Ltda      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 61,430
Profit (loss) of acquiree since acquisition date 0 0 10,479
Flyone Serviço Aéreo Especializado, Comércio e Serviço Ltda      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 55,900
Profit (loss) of acquiree since acquisition date 0 0 2,750
RG Consultoria Técnica Ambiental S.A. and RG Consultoria Técnica Ambiental Brasil Ltda      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 9,314
Profit (loss) of acquiree since acquisition date 0 0 1,596
Ambipar Response Analytical S/A.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 3,021
Profit (loss) of acquiree since acquisition date 0 0 693
Ambipar Response Fauna e Flora Ltda.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 25,080
Profit (loss) of acquiree since acquisition date 0 0 (5,775)
Graham Utility Hydrovac Services      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 4,209
Profit (loss) of acquiree since acquisition date 0 0 211
Ambipar Response Tank Cleaning S/A      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 60,484
Profit (loss) of acquiree since acquisition date 0 0 43,059
Ridgeline Canada Inc.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 45,468
Profit (loss) of acquiree since acquisition date 0 0 6,647
Witt O´Briens LLC      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 168,461
Profit (loss) of acquiree since acquisition date 0 0 18,342
Ambipar Response Marine S.A.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 12,968 0
Profit (loss) of acquiree since acquisition date 0 4,263 0
Ambipar Response Industrial Services S.A.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 51,637 0
Profit (loss) of acquiree since acquisition date 0 4,120 0
Ambipar Response Environmental Consulting Offshore S.A.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 4,955 0
Profit (loss) of acquiree since acquisition date 0 402 0
DFA Contracting Ltd      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 35,485 0
Profit (loss) of acquiree since acquisition date 0 3,765 0
Ambipar Response Remediation S.A.      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 0
Profit (loss) of acquiree since acquisition date 0 (2) 0
Ambipar Response Remediation Ltda      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 24,442 0
Profit (loss) of acquiree since acquisition date 0 6,689 0
RMC2 Soluções Ambientais Ltda      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 7,351 0
Profit (loss) of acquiree since acquisition date 0 (1,456) 0
Zenith Maritima Eireli [Member]      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 823 0
Profit (loss) of acquiree since acquisition date 0 293 0
Unidroid Robotica do Brasi Ltda [Member]      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 0
Profit (loss) of acquiree since acquisition date 0 (160) 0
Alberta LTD [Member]      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 0 0
Profit (loss) of acquiree since acquisition date 0 (13) 0
Bulldog Energy Group [Member]      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 58,536 0
Profit (loss) of acquiree since acquisition date 0 9,475 0
Smr Socorro Médico E Resgate Ltda      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 18,085 0
Profit (loss) of acquiree since acquisition date 0 702 0
Ssmr Saude Ocupacional Ltda. Epp [Member]      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 4,623 0
Profit (loss) of acquiree since acquisition date 0 287 0
Ssr Servicos De Seguranca E Resgate Ltda Epp [Member]      
Disclosure of detailed information about business combination [line items]      
Revenue of acquiree since acquisition date 0 4,233 0
Profit (loss) of acquiree since acquisition date R$ 0 R$ 176 R$ 0