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Segment Information - Summary of Financial Position (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Statement of financial position: |  |  |  |
Total assets | R$ 97,842,023 | R$ 83,713,565 |  |
Cash and cash equivalents | 16,174,130 | 13,642,918 | R$ 8,472,274 | R$ 3,621,798
Marketable securities | 4,388,007 | 3,669,109 |  |
Trade receivables | 2,745,853 | 2,033,441 |  |
Derivative financial instruments | 4,732,926 | 8,140,700 |  |
Inventories | 1,149,304 | 935,264 |  |
Sector financial assets | 558,310 | 241,749 |  |
Other financial assets | 320,193 | 69,126 |  |
Other current assets | 2,331,332 | 2,281,668 |  |
Other non-current assets | 6,755,242 | 4,338,418 |  |
Investments in associates | 780,067 | 383,851 |  |
Investments in joint ventures | 10,936,663 | 7,988,208 |  |
Biological assets |  |  |  |
Investment property | 3,886,696 |  |  |
Contract asset | 705,982 | 695,938 |  |
Right-of-use assets | 7,947,267 | 7,916,230 |  |
Property, plant and equipment | 16,648,553 | 14,068,506 |  |
Intangible assets and goodwill | 17,781,498 | 17,308,439 |  |
Liabilities | (68,972,001) | (62,894,698) |  |
Loans, borrowings and debentures | (45,659,037) | (42,249,460) | (29,052,215) |
Derivative financial instruments | (1,076,161) | (446,061) |  |
Trade payables | (3,253,504) | (2,630,054) |  |
Employee benefits payables | (552,991) | (336,466) |  |
Sector financial liabilities | (1,372,283) | (565,911) |  |
Other current liabilities | (3,491,829) | (3,706,193) |  |
Preferred shareholders payable in subsidiaries |  | (387,044) |  |
Lease | (3,267,682) | (3,001,847) |  |
Other non-current liabilities | (10,298,514) | (9,571,662) |  |
Total assets (net of liabilities) allocated by segment | 28,870,022 | 20,818,867 | 16,240,481 | 17,969,356
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 14,740,937 | 5,260,083 |  |
Non-controlling interests | 14,129,085 | 15,558,784 |  |
Total shareholders' equity | 28,870,022 | 20,818,867 | R$ 16,240,481 | R$ 17,969,356
Operating segments [member] |  |  |  |
Statement of financial position: |  |  |  |
Preferred shareholders payable in subsidiaries |  |  |  |
Operating segments [member] | Gas and Power [member] |  |  |  |
Statement of financial position: |  |  |  |
Total assets | 19,982,611 | 15,027,675 |  |
Cash and cash equivalents | 3,562,358 | 1,899,533 |  |
Marketable securities | 1,876,006 | 1,188,625 |  |
Trade receivables | 1,427,720 | 1,121,612 |  |
Derivative financial instruments | 358,456 | 517,181 |  |
Inventories | 129,554 | 121,064 |  |
Sector financial assets | 558,310 | 241,749 |  |
Other financial assets |  |  |  |
Other current assets | 340,909 | 276,139 |  |
Other non-current assets | 1,370,964 | 169,905 |  |
Investments in associates |  |  |  |
Investments in joint ventures |  |  |  |
Biological assets |  |  |  |
Investment property |  |  |  |
Contract asset | 684,970 | 686,690 |  |
Right-of-use assets | 73,220 | 19,865 |  |
Property, plant and equipment | 271,490 | 15,326 |  |
Intangible assets and goodwill | 9,328,654 | 8,769,986 |  |
Liabilities | (13,609,495) | (11,681,752) |  |
Loans, borrowings and debentures | (7,667,987) | (7,043,909) |  |
Derivative financial instruments | (357,932) | (286,018) |  |
Trade payables | (1,798,977) | (1,182,111) |  |
Employee benefits payables | (104,404) | (74,543) |  |
Sector financial liabilities | (1,372,283) | (565,911) |  |
Other current liabilities | (472,592) | (662,779) |  |
Preferred shareholders payable in subsidiaries |  |  |  |
Lease | (63,752) | (10,320) |  |
Other non-current liabilities | (1,771,568) | (1,856,161) |  |
Total assets (net of liabilities) allocated by segment | 6,373,116 | 3,345,923 |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 5,585,768 | 3,288,315 |  |
Non-controlling interests | 787,348 | 57,608 |  |
Total shareholders' equity | 6,373,116 | 3,345,923 |  |
Operating segments [member] | Moove [member] |  |  |  |
Statement of financial position: |  |  |  |
Total assets | 4,850,344 | 4,439,453 |  |
Cash and cash equivalents | 1,059,866 | 936,345 |  |
Marketable securities | 129,390 | 168,066 |  |
Trade receivables | 605,928 | 483,227 |  |
Derivative financial instruments | 26,513 | 28,463 |  |
Inventories | 790,825 | 564,836 |  |
Sector financial assets |  |  |  |
Other financial assets | 466 | 69,126 |  |
Other current assets | 298,004 | 146,166 |  |
Other non-current assets | 246,934 | 398,796 |  |
Investments in associates |  |  |  |
Investments in joint ventures |  |  |  |
Biological assets |  |  |  |
Investment property |  |  |  |
Contract asset | 21,011 | 9,248 |  |
Right-of-use assets | 51,458 | 39,550 |  |
Property, plant and equipment | 334,065 | 327,535 |  |
Intangible assets and goodwill | 1,285,884 | 1,268,095 |  |
Liabilities | (2,564,187) | (2,473,884) |  |
Loans, borrowings and debentures | (831,148) | (802,938) |  |
Derivative financial instruments |  | (348) |  |
Trade payables | (828,690) | (688,139) |  |
Employee benefits payables | (132,158) | (96,192) |  |
Sector financial liabilities |  |  |  |
Other current liabilities | (349,967) | (290,827) |  |
Preferred shareholders payable in subsidiaries |  |  |  |
Lease | (53,436) | (41,299) |  |
Other non-current liabilities | (368,788) | (554,141) |  |
Total assets (net of liabilities) allocated by segment | 2,286,157 | 1,965,569 |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 1,599,949 | 1,367,157 |  |
Non-controlling interests | 686,208 | 598,412 |  |
Total shareholders' equity | 2,286,157 | 1,965,569 |  |
Operating segments [member] | Logistics [member] |  |  |  |
Statement of financial position: |  |  |  |
Total assets | 48,174,556 | 45,912,604 |  |
Cash and cash equivalents | 9,448,193 | 7,778,612 |  |
Marketable securities | 1,425,897 | 1,396,723 |  |
Trade receivables | 503,316 | 428,492 |  |
Derivative financial instruments | 1,674,821 | 3,988,524 |  |
Inventories | 228,923 | 249,318 |  |
Sector financial assets |  |  |  |
Other financial assets |  |  |  |
Other current assets | 747,308 | 685,659 |  |
Other non-current assets | 3,197,105 | 2,613,480 |  |
Investments in associates | 57,844 | 50,715 |  |
Investments in joint ventures |  |  |  |
Biological assets |  |  |  |
Investment property |  |  |  |
Contract asset | 1 |  |  |
Right-of-use assets | 7,784,941 | 7,823,401 |  |
Property, plant and equipment | 15,974,562 | 13,646,248 |  |
Intangible assets and goodwill | 7,131,645 | 7,251,432 |  |
Liabilities | (33,156,493) | (32,359,866) |  |
Loans, borrowings and debentures | (21,178,748) | (21,656,908) |  |
Derivative financial instruments | (576,749) |  |  |
Trade payables | (618,658) | (754,546) |  |
Employee benefits payables | (255,963) | (139,058) |  |
Sector financial liabilities |  |  |  |
Other current liabilities | (1,384,611) | (950,582) |  |
Preferred shareholders payable in subsidiaries |  |  |  |
Lease | (3,106,883) | (2,912,317) |  |
Other non-current liabilities | (6,034,881) | (5,946,455) |  |
Total assets (net of liabilities) allocated by segment | 15,018,063 | 13,552,738 |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 4,479,944 | 2,150,052 |  |
Non-controlling interests | 10,538,119 | 11,402,686 |  |
Total shareholders' equity | 15,018,063 | 13,552,738 |  |
Operating segments [member] | Cosan Investiments |  |  |  |
Statement of financial position: |  |  |  |
Total assets | 4,484,805 |  |  |
Cash and cash equivalents | 7,468 |  |  |
Marketable securities | 46,094 |  |  |
Trade receivables | 207,761 |  |  |
Derivative financial instruments |  |  |  |
Inventories |  |  |  |
Sector financial assets |  |  |  |
Other financial assets | 319,728 |  |  |
Other current assets | 13,470 |  |  |
Other non-current assets | 354 |  |  |
Investments in associates |  |  |  |
Investments in joint ventures |  |  |  |
Biological assets |  |  |  |
Investment property | 3,886,696 |  |  |
Contract asset |  |  |  |
Right-of-use assets | 3,203 |  |  |
Property, plant and equipment | 31 |  |  |
Intangible assets and goodwill |  |  |  |
Liabilities | (246,599) |  |  |
Loans, borrowings and debentures |  |  |  |
Derivative financial instruments |  |  |  |
Trade payables | (1,006) |  |  |
Employee benefits payables |  |  |  |
Sector financial liabilities |  |  |  |
Other current liabilities | (48,739) |  |  |
Lease | (3,253) |  |  |
Other non-current liabilities | (193,601) |  |  |
Total assets (net of liabilities) allocated by segment | 4,238,206 |  |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 2,119,104 |  |  |
Non-controlling interests | 2,119,102 |  |  |
Total shareholders' equity | 4,238,206 |  |  |
Operating segments [member] | Raízen |  |  |  |
Statement of financial position: |  |  |  |
Total assets | 110,136,182 | 67,942,010 |  |
Cash and cash equivalents | 5,034,788 | 3,422,828 |  |
Marketable securities | 154,052 | 19,086 |  |
Trade receivables | 7,618,176 | 4,265,294 |  |
Derivative financial instruments | 11,805,548 | 6,064,604 |  |
Inventories | 14,297,068 | 8,317,566 |  |
Sector financial assets |  |  |  |
Other financial assets | 261,412 | 160,600 |  |
Other current assets | 12,545,650 | 5,761,106 |  |
Other non-current assets | 8,562,180 | 5,225,978 |  |
Investments in associates |  |  |  |
Investments in joint ventures | 1,317,720 | 1,305,790 |  |
Biological assets | 3,106,744 | 1,073,582 |  |
Investment property |  |  |  |
Contract asset | 2,941,390 | 2,860,658 |  |
Right-of-use assets | 10,758,442 | 5,210,366 |  |
Property, plant and equipment | 22,506,160 | 18,165,518 |  |
Intangible assets and goodwill | 9,226,852 | 6,089,034 |  |
Liabilities | (84,736,772) | (51,528,998) |  |
Loans, borrowings and debentures | (26,967,092) | (24,557,518) |  |
Derivative financial instruments | (12,377,276) | (3,088,300) |  |
Trade payables | (15,678,442) | (9,311,282) |  |
Employee benefits payables | (788,948) | (534,376) |  |
Sector financial liabilities |  |  |  |
Other current liabilities | (9,591,918) | (4,094,274) |  |
Lease | (10,685,524) | (4,734,766) |  |
Other non-current liabilities | (8,647,572) | (5,208,482) |  |
Total assets (net of liabilities) allocated by segment | 25,399,410 | 16,413,012 |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 23,870,251 | 16,129,497 |  |
Non-controlling interests | 1,529,159 | 283,515 |  |
Total shareholders' equity | 25,399,410 | 16,413,012 |  |
Unallocated amounts [member] | Cosan Corporate [member] |  |  |  |
Statement of financial position: |  |  |  |
Total assets | 35,054,649 | 33,324,494 |  |
Cash and cash equivalents | 2,096,245 | 3,028,428 |  |
Marketable securities | 910,620 | 915,695 |  |
Trade receivables | 1,128 | 110 |  |
Derivative financial instruments | 2,673,136 | 3,606,532 |  |
Inventories | 2 | 46 |  |
Sector financial assets |  |  |  |
Other financial assets | (1) |  |  |
Other current assets | 1,599,793 | 1,938,096 |  |
Other non-current assets | 2,180,558 | 1,566,428 |  |
Investments in associates | 14,518,340 | 14,149,214 |  |
Investments in joint ventures | 10,936,663 | 7,988,208 |  |
Biological assets |  |  |  |
Investment property |  |  |  |
Contract asset |  |  |  |
Right-of-use assets | 34,445 | 33,414 |  |
Property, plant and equipment | 68,405 | 79,397 |  |
Intangible assets and goodwill | 35,315 | 18,926 |  |
Liabilities | (20,305,063) | (17,553,779) |  |
Loans, borrowings and debentures | (15,981,154) | (12,745,705) |  |
Derivative financial instruments | (141,480) | (159,695) |  |
Trade payables | (6,173) | (5,258) |  |
Employee benefits payables | (60,466) | (26,673) |  |
Sector financial liabilities |  |  |  |
Other current liabilities | (1,384,091) | (2,006,371) |  |
Preferred shareholders payable in subsidiaries |  | (387,044) |  |
Lease | (40,358) | (37,911) |  |
Other non-current liabilities | (2,691,341) | (2,185,122) |  |
Total assets (net of liabilities) allocated by segment | 14,749,587 | 15,770,715 |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | 14,751,279 | 12,270,637 |  |
Non-controlling interests | (1,692) | 3,500,078 |  |
Total shareholders' equity | 14,749,587 | 15,770,715 |  |
Deconsolidated effects [member] |  |  |  |
Statement of financial position: |  |  |  |
Total assets | (110,136,182) | (67,942,010) |  |
Cash and cash equivalents | (5,034,788) | (3,422,828) |  |
Marketable securities | (154,052) | (19,086) |  |
Trade receivables | (7,618,176) | (4,265,294) |  |
Derivative financial instruments | (11,805,548) | (6,064,604) |  |
Inventories | (14,297,068) | (8,317,566) |  |
Sector financial assets |  |  |  |
Other financial assets | (261,412) | (160,600) |  |
Other current assets | (12,545,650) | (5,761,106) |  |
Other non-current assets | (8,562,180) | (5,225,978) |  |
Investments in associates |  |  |  |
Investments in joint ventures | (1,317,720) | (1,305,790) |  |
Biological assets | (3,106,744) | (1,073,582) |  |
Investment property |  |  |  |
Contract asset | (2,941,390) | (2,860,658) |  |
Right-of-use assets | (10,758,442) | (5,210,366) |  |
Property, plant and equipment | (22,506,160) | (18,165,518) |  |
Intangible assets and goodwill | (9,226,852) | (6,089,034) |  |
Liabilities | 84,736,772 | 51,528,998 |  |
Loans, borrowings and debentures | 26,967,092 | 24,557,518 |  |
Derivative financial instruments | 12,377,276 | 3,088,300 |  |
Trade payables | 15,678,442 | 9,311,282 |  |
Employee benefits payables | 788,948 | 534,376 |  |
Sector financial liabilities |  |  |  |
Other current liabilities | 9,591,918 | 4,094,274 |  |
Preferred shareholders payable in subsidiaries |  |  |  |
Lease | 10,685,524 | 4,734,766 |  |
Other non-current liabilities | 8,647,572 | 5,208,482 |  |
Total assets (net of liabilities) allocated by segment | (25,399,410) | (16,413,012) |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | (23,870,251) | (16,129,497) |  |
Non-controlling interests | (1,529,159) | (283,515) |  |
Total shareholders' equity | (25,399,410) | (16,413,012) |  |
Elimination of intersegment amounts [member] |  |  |  |
Statement of financial position: |  |  |  |
Total assets | (14,704,942) | (14,990,661) |  |
Cash and cash equivalents |  |  |  |
Marketable securities |  |  |  |
Trade receivables |  |  |  |
Derivative financial instruments |  |  |  |
Inventories |  |  |  |
Sector financial assets |  |  |  |
Other financial assets |  |  |  |
Other current assets | (668,152) | (764,392) |  |
Other non-current assets | (240,673) | (410,191) |  |
Investments in associates | (13,796,117) | (13,816,078) |  |
Investments in joint ventures |  |  |  |
Biological assets |  |  |  |
Investment property |  |  |  |
Contract asset |  |  |  |
Right-of-use assets |  |  |  |
Property, plant and equipment |  |  |  |
Intangible assets and goodwill |  |  |  |
Liabilities | 909,836 | 1,174,583 |  |
Loans, borrowings and debentures |  |  |  |
Derivative financial instruments |  |  |  |
Trade payables |  |  |  |
Employee benefits payables |  |  |  |
Sector financial liabilities |  |  |  |
Other current liabilities | 148,171 | 204,366 |  |
Preferred shareholders payable in subsidiaries |  |  |  |
Lease |  |  |  |
Other non-current liabilities | 761,665 | 970,217 |  |
Total assets (net of liabilities) allocated by segment | (13,795,107) | (13,816,078) |  |
Shareholders' equity attributable to: |  |  |  |
Owners of the Company | (13,795,107) | (13,816,078) |  |
Non-controlling interests |  |  |  |
Total shareholders' equity | R$ (13,795,107) | R$ (13,816,078) |  |

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