XML 44 R72.htm IDEA: XBRL DOCUMENT v3.20.1
Significant Accounting Policies - Summary of Sales Revenues Subject to Taxes and Contributions (Parenthetical) (Detail)
12 Months Ended
Dec. 31, 2019
Disclosure of significant accounting policies [line items]  
Social security levied on gross revenue 4.50%
Bottom of range [member]  
Disclosure of significant accounting policies [line items]  
Municipal tax rate 2.00%
Top of range [member]  
Disclosure of significant accounting policies [line items]  
Municipal tax rate 5.00%