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Basis of Preparation of the Consolidated Financial Statements - Schedule of Reclassification of Contract Assets and Liabilities (Detail) - ARS ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of assets and liabilities with significant risk of material adjustment [line items]        
Inventories $ 53,324 $ 27,149 $ 21,808 $ 19,173
Contract assets 420 142 12  
Accounts payable (current) 84,225 45,911 41,581  
Contract Liabilities (current) 4,996 1,460 14  
Accounts Payable (noncurrent) 3,373 185 2,187  
Contract liabilities (noncurrent) $ 1,828 1,470    
Previously stated [member]        
Disclosure of assets and liabilities with significant risk of material adjustment [line items]        
Inventories   27,291 21,820  
Accounts payable (current)   47,371 41,595  
Accounts Payable (noncurrent)   1,655 2,187  
Increase (decrease) due to application of IFRS 15 [member]        
Disclosure of assets and liabilities with significant risk of material adjustment [line items]        
Inventories   (142) (12)  
Contract assets   142 12  
Accounts payable (current)   (1,460) (14)  
Contract Liabilities (current)   1,460 $ 14  
Accounts Payable (noncurrent)   (1,470)    
Contract liabilities (noncurrent)   $ 1,470