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Trade Receivables - Summary of Changes in Provision for Doubtful Trade Receivables (Detail) - Provision for Doubtful Trade Receivable [member] - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure Changes In Provision For Doubtful Trade Receivables [line items]      
Balance at beginning of the fiscal year $ 1,323 $ 1,084  
Increases charged to expenses 444 222 $ 197
Decreases charged to income (91) (194) (28)
Translation differences 607 92 67
Result from net monetary position 92    
Other movements (24) 119  
Balance at end of period 2,776 1,323 1,084
Previously stated [member]      
Disclosure Changes In Provision For Doubtful Trade Receivables [line items]      
Balance at beginning of the fiscal year 1,323 1,084 848
Balance at end of period   1,323 1,084
Increase (decrease) due to changes in accounting policy required by IFRSs [member]      
Disclosure Changes In Provision For Doubtful Trade Receivables [line items]      
Balance at beginning of the fiscal year 425    
Balance at end of period   425  
Restated balance [member]      
Disclosure Changes In Provision For Doubtful Trade Receivables [line items]      
Balance at beginning of the fiscal year $ 1,748 1,084 848
Balance at end of period   $ 1,748 $ 1,084