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EMPLOYEE BENEFIT PLANS - Summary of Plans (Details) - Suzano Prev - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
EMPLOYEE BENEFIT PLANS    
Maximum aggregate percentage of contribution by employee 12.00%  
Employer contributions R$ 18,342 R$ 15,248
Nominal salary greater than 10 URS    
EMPLOYEE BENEFIT PLANS    
Percentage of contribution by the employee 0.50%  
Nominal salary greater than 10 URS | Bottom of range [member]    
EMPLOYEE BENEFIT PLANS    
Percentage of contribution by the employee 1.00%  
Nominal salary greater than 10 URS | Top of range [member]    
EMPLOYEE BENEFIT PLANS    
Percentage of contribution by the employee   6.00%
Nominal salary less than 10 URS | Bottom of range [member]    
EMPLOYEE BENEFIT PLANS    
Percentage of contribution by the Company 0.50%  
Percentage of contribution by the employee 0.50%  
Nominal salary less than 10 URS | Top of range [member]    
EMPLOYEE BENEFIT PLANS    
Percentage of contribution by the employee 1.00%