v3.25.1
INVESTMENTS IN SUBSIDIARIES AND ASSOCIATES - Summary of Profit or Loss and Other Comprehensive Income (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of investments accounted for using equity method [line items]      
Net revenue R$ 43,950,742 R$ 39,468,497 R$ 39,322,786
Income before taxes (5,245,119) 5,113,751 2,652,625
Income tax and social contribution (3,190,522) (274,426) 118,404
Income for the year (8,161,766) 4,884,744 2,820,875
Other comprehensive income 250,775 (344,957) 993,684
Total comprehensive income for the year (7,910,991) 4,539,787 3,814,559
Comprehensive income attributable to non-controlling shareholders 1,261,274 3,698,617 1,549,372
Dividends paid     1,237,779
Cosan Dez [member]      
Disclosure of investments accounted for using equity method [line items]      
Net revenue
Income before taxes 1,556,754 1,396,633 63,578
Income tax and social contribution (15,863) (2,301)
Income for the year 1,540,891 1,394,332 63,578
Other comprehensive income (122,246) 1,957
Total comprehensive income for the year 1,418,645 1,396,289 63,578
Comprehensive income attributable to non-controlling shareholders (34,229) 454 14,965
Dividends paid 1,667,187 372,772
Cosan Nove [member]      
Disclosure of investments accounted for using equity method [line items]      
Net revenue
Income before taxes (1,078,773) 1,005,640 194,522
Income tax and social contribution (271) (5,892)
Income for the year (1,079,044) 999,748 194,522
Other comprehensive income 76,229 (54,731)
Total comprehensive income for the year (1,002,815) 945,017 194,522
Comprehensive income attributable to non-controlling shareholders 25,796 (14,728) 52,353
Dividends paid 571,261
Moove [member]      
Disclosure of investments accounted for using equity method [line items]      
Net revenue 3,842,981
Income before taxes 394,309 207,982 485,729
Income tax and social contribution 11,665
Income for the year 394,309 207,982 497,394
Other comprehensive income 86,760 (262,473)
Total comprehensive income for the year 481,069 (54,491) 497,394
Comprehensive income attributable to non-controlling shareholders 26,028 (78,742) 149,218
Dividends paid 900,000 150,000
Rumo S.A. [member]      
Disclosure of investments accounted for using equity method [line items]      
Net revenue 1,064,286 1,013,446 984,597
Income before taxes (863,209) 769,233 633,164
Income tax and social contribution (96,038) (49,569) (118,224)
Income for the year (959,247) 719,664 514,940
Other comprehensive income 1,300 1,011 2,961
Total comprehensive income for the year (957,947) 720,675 517,901
Comprehensive income attributable to non-controlling shareholders 904 704 360,776
Dividends paid 170,817 122,231 35,733
Radar [Member]      
Disclosure of investments accounted for using equity method [line items]      
Net revenue 1,441,809 743,411 834,616
Income before taxes 1,936,036 2,820,202 1,556,155
Income tax and social contribution (130,285) (147,636) (74,915)
Income for the year 1,805,751 2,672,566 1,481,240
Other comprehensive income
Total comprehensive income for the year 1,805,751 2,672,566 1,481,240
Comprehensive income attributable to non-controlling shareholders
Dividends paid R$ 917,530 R$ 530,576 R$ 948,967