v3.25.1
INVESTMENTS IN SUBSIDIARIES AND ASSOCIATES - Summary of Information in Associates of Company and Company's Ownership (Detail) (Parenthetical) - shares
1 Months Ended 12 Months Ended
Apr. 30, 2024
Dec. 31, 2024
Sep. 16, 2024
Compass Dois LTDA [Member] | Companhia Paranaense de Gás - Compagás [member]      
Disclosure of investments accounted for using equity method [line items]      
Percentage of voting equity interests acquired (as a percent)   51.00% 51.00%
Vale SA [Member]      
Disclosure of investments accounted for using equity method [line items]      
Number Of Share Disposed In Investment 33,524,185    
Percentage Of Share Capital Disposed (0.78%)    
Cosan ownership interest 4.15% 4.15% [1]  
[1] In April 2024, Cosan sold 33,524,185 Vale shares, reducing its stake by 0.78%. The figure of 4.15% refers to the percentage holding, excluding treasury shares, for calculating equity equivalence and receiving dividends.