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Business Combinations - Schedule of Intangible Assets (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Sep. 04, 2018
Dec. 31, 2019
Customer relationship [member]    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets, expected amortisation period   10 years
Software [member]    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets, expected amortisation period   5 years
Equals S.A. [member] | Customer relationship [member]    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets R$ 2,103  
Intangible assets, method of amortisation Cost approach  
Intangible assets, expected amortisation period 3 years  
Equals S.A. [member] | Software [member]    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets R$ 34,355  
Intangible assets, method of amortisation Multi-period Excess Earnings Method—MEEM  
Intangible assets, expected amortisation period 10 years  
Equals S.A. [member] | Non compete agreement [member]    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets R$ 1,659  
Intangible assets, method of amortisation With and without method  
Intangible assets, expected amortisation period 5 years