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Balances and Transactions in Foreign Currencies - Exchange Rates (Detail)
Apr. 09, 2021
$ / €
$ / $
Dec. 31, 2020
$ / €
$ / $
Dec. 31, 2019
$ / €
$ / $
Disclosure of exchange rates [Line Items]      
Closing foreign exchange rate   19.8920  
USD      
Disclosure of exchange rates [Line Items]      
Closing foreign exchange rate 20.1765 19.9487 18.8452
Euro [member]      
Disclosure of exchange rates [Line Items]      
Closing foreign exchange rate | $ / € 23.8326 24.5213 21.1223