XML 158 R131.htm IDEA: XBRL DOCUMENT v3.19.1
Intangible Assets - Additional Information (Detail)
R$ in Thousands
 12 Months Ended
Dec. 31, 2018
BRL (R$)
yr
Dec. 31, 2017
BRL (R$)
Dec. 31, 2016
BRL (R$)
Disclosure of detailed information about intangible assets [line items]      
Period of evaluation 5 years    
Impairment loss R$ 5,565   R$ 2,114
Price paid R$ 237,593 R$ 221,960 R$ 107,644
Terminal Quimico De Aratu SATequimar [member] | Operating Leases [member]      
Disclosure of detailed information about intangible assets [line items]      
Agreement term | yr 20    
Price paid R$ 4,334    
Terminal Quimico De Aratu SATequimar [member] | Commercial property rights [member]      
Disclosure of detailed information about intangible assets [line items]      
Agreement term | yr 20    
Price paid R$ 12,000    
Bottom of range [member]      
Disclosure of detailed information about intangible assets [line items]      
Discount rate 8.40%    
Real growth rate 0.00%    
Top of range [member]      
Disclosure of detailed information about intangible assets [line items]      
Discount rate 13.90%    
Real growth rate 1.00%    
Extrafarma [member]      
Disclosure of detailed information about intangible assets [line items]      
Period of evaluation 10 years    
Period to maturity 4 years