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DEFERRED INCOME TAX ASSETS/LIABILITIES - Deferred tax assets and liabilities, net (Details) - ARS ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net $ 53,129 $ 38,894
Actions for recourse tax receivable (870) (1,259)
Total deferred tax liability, net 52,259 37,635
Net deferred tax assets (293) (120)
Net deferred tax liabilities 52,552 37,755
Tax carryforward    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net (8,590) (4,408)
Allowance for doubtful accounts    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net (1,513) (1,422)
Provisions    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net (1,529) (1,634)
PP&E and Intangible assets    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net 51,922 45,825
Cash dividends from foreign companies    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net 515 642
Income tax inflation adjustment effect    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net 12,346  
Other    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Total deferred tax liabilities, net $ (22) $ (109)