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Business Combination - Assets and liabilities acquired at fair value (Details) R$ in Thousands, $ in Thousands | 12 Months Ended |  |  |  |  |  |
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Dec. 31, 2024 BRL (R$) | Dec. 31, 2023 BRL (R$) | Dec. 31, 2022 BRL (R$) | Dec. 31, 2024 CAD ($) | May 31, 2023 | Nov. 30, 2022 | Jul. 31, 2022 | Jun. 30, 2022 | Jan. 31, 2022
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | R$ 31,508 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 97,203 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 18,360 |  |  |  |  |  |  |
Other Assets |  | 49,194 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 175,521 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 94,660 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 523 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 213,123 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 382,052 | R$ 508,174 |  |  |  |  |  |
Separately Identified Intangibles |  | 900 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 2,699 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | (69,218) |  |  |  |  |  |  |
Loans and Financing |  | (9,765) |  |  |  |  |  |  |
Employee benefits |  | (9,487) |  |  |  |  |  |  |
Current income tax payable |  | (19,248) |  |  |  |  |  |  |
Other liabilities |  | (90,053) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (19,131) |  |  |  |  |  |  |
Other liabilities |  | (91,134) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | (1,224) |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | (1,278) |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 373,153 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 733,604 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (31,508) |  |  |  |  |  |  |
Liabilities incurred |  | (285,206) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 416,890 |  |  |  |  |  |  |
Primary |  | 1,500 |  |  |  |  |  |  |
Secondary |  | 363,844 |  |  |  |  |  |  |
Acquisition-date Non-cash Value |  | 368,260 |  |  |  |  |  |  |
Secondary |  | (285,206) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 213,123 |  |  |  |  |  |  |
Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | R$ 0 | 47,131 | R$ 1,090,040 |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 213,123 |  |  |  |  |  |  |
Total for all business combinations [member] |  |  |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 382,052 |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 351,552 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 733,604 |  |  |  |  |  |  |
Liabilities incurred |  | (285,206) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (351,552) |  |  |  |  |  |  |
Girassol Apoio Marítimo Ltda [Member] |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 1,526 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 1,501 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 50 |  |  |  |  |  |  |
Other Assets |  | 112 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 943 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 3,425 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 25 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 5,707 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 122 |  |  |  |  |  |  |
Loans and Financing |  | (47) |  |  |  |  |  |  |
Employee benefits |  | (950) |  |  |  |  |  |  |
Current income tax payable |  | (160) |  |  |  |  |  |  |
Other liabilities |  | (450) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Other liabilities |  | (55) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 4,638 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 5,798 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 10,345 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (1,526) |  |  |  |  |  |  |
Liabilities incurred |  | (5,173) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 3,646 |  |  |  |  |  |  |
Secondary |  | 10,345 |  |  |  |  |  |  |
Secondary |  | (5,173) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (4,638) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 10,345 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 80.00% |  |  | 80.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
EKMAN - Serviços Ambientais e Oceanograficos Ltda [Member] |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 2,924 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 425 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Other Assets |  | 7 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 0 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 490 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 8 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 4,832 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 0 |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Employee benefits |  | (2) |  |  |  |  |  |  |
Current income tax payable |  | (290) |  |  |  |  |  |  |
Other liabilities |  | (1,332) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Other liabilities |  | 0 |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 1,338 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 2,230 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 6,170 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (2,924) |  |  |  |  |  |  |
Liabilities incurred |  | (4,134) |  |  |  |  |  |  |
Cash paid, net of cash received |  | (888) |  |  |  |  |  |  |
Secondary |  | 6,170 |  |  |  |  |  |  |
Secondary |  | (4,134) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (1,338) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 6,170 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 60.00% |  |  | 60.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Plimsoll Serviços Ltda |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 8,420 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 4,664 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Other Assets |  | 753 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 0 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 1,894 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 27,449 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 1,677 |  |  |  |  |  |  |
Loans and Financing |  | (525) |  |  |  |  |  |  |
Employee benefits |  | (924) |  |  |  |  |  |  |
Current income tax payable |  | (3,283) |  |  |  |  |  |  |
Other liabilities |  | (5,581) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Other liabilities |  | 0 |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 1,908 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 3,741 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 29,357 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (8,420) |  |  |  |  |  |  |
Liabilities incurred |  | (14,679) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 6,258 |  |  |  |  |  |  |
Secondary |  | 29,357 |  |  |  |  |  |  |
Secondary |  | (14,679) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (1,908) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 29,357 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 51.00% |  |  | 51.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
DFA Contracting Ltd |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 9,597 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 13,474 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Other Assets |  | 517 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 0 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 9,096 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 31,345 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 2,699 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 1,371 |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Employee benefits |  | 0 |  |  |  |  |  |  |
Current income tax payable |  | 0 |  |  |  |  |  |  |
Other liabilities |  | (16) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (1,258) |  |  |  |  |  |  |
Other liabilities |  | (11,081) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | (918) |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 20,739 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 20,739 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 52,084 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (9,597) |  |  |  |  |  |  |
Liabilities incurred |  | (17,166) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 25,321 |  |  |  |  |  |  |
Secondary |  | 52,084 |  |  |  |  |  |  |
Secondary |  | (17,166) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (20,739) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | $ |  |  |  | $ 14,135 |  |  |  |  |
Percentage of voting equity interests acquired | 100.00% |  |  | 100.00% | 100.00% |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Solução Ambiental Engenharia, Participações e Negócios Ltda. [Member] |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 1,953 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 9,023 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 8,965 |  |  |  |  |  |  |
Other Assets |  | 5,437 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 103 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 29,210 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 94 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 45,434 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 1,534 |  |  |  |  |  |  |
Loans and Financing |  | (6,279) |  |  |  |  |  |  |
Employee benefits |  | (979) |  |  |  |  |  |  |
Current income tax payable |  | (2,511) |  |  |  |  |  |  |
Other liabilities |  | (17,445) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (4,723) |  |  |  |  |  |  |
Other liabilities |  | (99) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 10,167 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | (1,278) |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 19,937 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 55,601 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (1,953) |  |  |  |  |  |  |
Liabilities incurred |  | (34,286) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 19,362 |  |  |  |  |  |  |
Secondary |  | 55,601 |  |  |  |  |  |  |
Secondary |  | (34,286) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (10,167) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 55,601 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 51.00% |  |  | 51.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Zenith Maritima Eireli [Member] |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 473 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 492 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Other Assets |  | 427 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 114 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 1,075 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 369 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | (229) |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 59 |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Employee benefits |  | (396) |  |  |  |  |  |  |
Current income tax payable |  | (134) |  |  |  |  |  |  |
Other liabilities |  | (20) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (229) |  |  |  |  |  |  |
Other liabilities |  | (49) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 1,238 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 2,063 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 1,009 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (473) |  |  |  |  |  |  |
Liabilities incurred |  | (673) |  |  |  |  |  |  |
Cash paid, net of cash received |  | (137) |  |  |  |  |  |  |
Secondary |  | 1,009 |  |  |  |  |  |  |
Secondary |  | (673) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (1,238) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 1,009 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 60.00% |  |  | 60.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Unidroid Robotica Do Brasil Ltda |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 1,020 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 0 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 1,789 |  |  |  |  |  |  |
Other Assets |  | 234 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 1,501 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 89 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 3,236 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 900 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 7 |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Employee benefits |  | 0 |  |  |  |  |  |  |
Current income tax payable |  | 0 |  |  |  |  |  |  |
Other liabilities |  | (11) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Other liabilities |  | (2,731) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | (306) |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 1,264 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 2,478 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 4,500 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (1,020) |  |  |  |  |  |  |
Liabilities incurred |  | (3,000) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 480 |  |  |  |  |  |  |
Primary |  | 1,500 |  |  |  |  |  |  |
Secondary |  | 3,000 |  |  |  |  |  |  |
Secondary |  | (3,000) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (1,264) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 4,500 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 51.00% |  |  | 51.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Smr Socorro Médico E Resgate Ltda |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 3,240 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 6,705 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 912 |  |  |  |  |  |  |
Other Assets |  | 355 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 4,985 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 7,766 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 16 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 37,061 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 1,742 |  |  |  |  |  |  |
Loans and Financing |  | (635) |  |  |  |  |  |  |
Employee benefits |  | (4,245) |  |  |  |  |  |  |
Current income tax payable |  | (2,629) |  |  |  |  |  |  |
Other liabilities |  | (1,155) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (370) |  |  |  |  |  |  |
Other liabilities |  | (1,515) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 8,182 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 11,688 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 45,243 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (3,240) |  |  |  |  |  |  |
Liabilities incurred |  | (45,243) |  |  |  |  |  |  |
Cash paid, net of cash received |  | (3,240) |  |  |  |  |  |  |
Secondary |  | 45,243 |  |  |  |  |  |  |
Secondary |  | (45,243) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (8,182) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 45,243 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 70.00% |  |  | 70.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Ssmr Saude Ocupacional Ltda. Epp [Member] |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 793 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 1,481 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 126 |  |  |  |  |  |  |
Other Assets |  | 112 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 548 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 7,138 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 1,661 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | 179 |  |  |  |  |  |  |
Loans and Financing |  | (848) |  |  |  |  |  |  |
Employee benefits |  | (1,272) |  |  |  |  |  |  |
Current income tax payable |  | (594) |  |  |  |  |  |  |
Other liabilities |  | (2) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Other liabilities |  | (5) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 5,109 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 7,298 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 6,770 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (793) |  |  |  |  |  |  |
Liabilities incurred |  | (6,770) |  |  |  |  |  |  |
Cash paid, net of cash received |  | (793) |  |  |  |  |  |  |
Secondary |  | 6,770 |  |  |  |  |  |  |
Secondary |  | (6,770) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (5,109) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 6,770 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 70.00% |  |  | 70.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Ssr Servicos De Seguranca E Resgate Ltda Epp [Member] |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 882 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 1,153 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 270 |  |  |  |  |  |  |
Other Assets |  | 1,535 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 440 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 6,453 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 11 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 15,273 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | (218) |  |  |  |  |  |  |
Loans and Financing |  | (1,431) |  |  |  |  |  |  |
Employee benefits |  | (749) |  |  |  |  |  |  |
Current income tax payable |  | (384) |  |  |  |  |  |  |
Other liabilities |  | (143) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (4,752) |  |  |  |  |  |  |
Other liabilities |  | (2,363) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 493 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 704 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 15,766 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (882) |  |  |  |  |  |  |
Liabilities incurred |  | (15,766) |  |  |  |  |  |  |
Cash paid, net of cash received |  | (882) |  |  |  |  |  |  |
Secondary |  | 15,766 |  |  |  |  |  |  |
Secondary |  | (15,766) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | (493) |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Value of acquisition | R$ 15,766 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 70.00% |  |  | 70.00% |  |  |  |  |
Goodwill recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
1653395 Alberta Ltd ("165 AB") |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalentes |  | 680 |  |  |  |  |  |  |
Fair value of acquired receivables |  | 58,285 |  |  |  |  |  |  |
Inventory recognised as of acquisition date |  | 6,248 |  |  |  |  |  |  |
Other Assets |  | 39,705 |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Other Assets |  | 166,887 |  |  |  |  |  |  |
Property, plant and equipment recognised as of acquisition date |  | 28,024 |  |  |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date |  | 0 |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | 213,123 |  |  |  |  |  |  |
Separately Identified Intangibles |  | 0 |  |  |  |  |  |  |
Added Value of Fixed Assets |  | 0 |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Trade and other payables |  | (62,309) |  |  |  |  |  |  |
Loans and Financing |  | 0 |  |  |  |  |  |  |
Employee benefits |  | 30 |  |  |  |  |  |  |
Current income tax payable |  | (9,263) |  |  |  |  |  |  |
Other liabilities |  | (63,898) |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Loans and Financing |  | (7,799) |  |  |  |  |  |  |
Other liabilities |  | (73,236) |  |  |  |  |  |  |
(-)Deferred taxes on Added Value |  | 0 |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 0 |  |  |  |  |  |  |
Identifiable assets acquired (liabilities assumed) |  | 296,477 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 506,759 |  |  |  |  |  |  |
Cash And Cash Equivalent Recognised As Of Acquisition Date |  | (680) |  |  |  |  |  |  |
Liabilities incurred |  | (138,316) |  |  |  |  |  |  |
Cash paid, net of cash received |  | 367,763 |  |  |  |  |  |  |
Secondary |  | 138,499 |  |  |  |  |  |  |
Acquisition-date Non-cash Value |  | 368,260 |  |  |  |  |  |  |
Secondary |  | (138,316) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | R$ 213,123 |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  | 70.00% |  |  |  |  |  |  |
Goodwill recognised as of acquisition date |  | R$ 213,123 |  |  |  |  |  |  |
Alberta LTD [Member] |  |  |  |  |  |  |  |  |
Non-current assets |  |  |  |  |  |  |  |  |
Goodwill paid resulting from expected future profitability |  | 210,283 |  |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |  |  |  |
Attributable to the Controlling Shareholders of the Group |  | 296,476 |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  | 506,759 |  |  |  |  |  |  |
Liabilities incurred |  | (138,316) |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Total Net amount of the identifiable net assets acquired and the liabilities assumed attributable to the Controlling Shareholders of the Group |  | R$ (296,476) |  |  |  |  |  |  |
Value of acquisition | R$ 138,755 |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 70.00% |  |  | 70.00% |  |  |  |  |
Flyone Servico Aereo Especializado, Comercio e Servico Ltda |  |  |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  |  |  | 51.00%
Ambipar Response Analytical S/A. |  |  |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  |  | 51.00% |
Ambipar Response Tank Cleaning S/A |  |  |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  | 51.00% |  |
Witt O´Briens LLC |  |  |  |  |  |  |  |  |
Determining goodwill from expected future profitability |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  | 100.00% |  |  |

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