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Significant Accounting Policies - Schedule of Taxes Paid on Purchase of Goods and Services (Detail)
12 Months Ended
Dec. 31, 2019
Contribution on gross revenue for social integration program [member]  
Disclosure of significant accounting policies [line items]  
Purchase of goods and services tax rate 1.65%
Contribution on gross revenue for social security financing [member]  
Disclosure of significant accounting policies [line items]  
Purchase of goods and services tax rate 7.60%