XML 187 R163.htm IDEA: XBRL DOCUMENT v3.19.1
Balances and Transactions with Related Parties - Summary of Compensation of Key Management Personnel (Parenthetical) (Detail) - ARS ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of key management personnel compensation [abstract]      
Social Security contributions $ 66 $ 50 $ 45