XML 120 R96.htm IDEA: XBRL DOCUMENT v3.19.1
Intangible Assets - Summary of Changes in Intangible Assets (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance $ 9,976 $ 8,114 $ 7,359
Ending balance 20,402 9,976 8,114
Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 25,119 20,336 16,777
Increases 2,344 1,153 888
Translation effect 25,594 3,607 3,675
Adjustment for inflation 591    
Decreases and reclassifications (317) 23 (1,004)
Ending balance 53,331 25,119 20,336
Accumulated amortization [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 15,143 12,222 9,418
Increases 1,749 838 717
Translation effect 15,983 2,215 2,093
Adjustment for inflation 58    
Decreases and reclassifications (4) (132) (6)
Ending balance 32,929 15,143 12,222
Service concession [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 5,644 4,514 3,974
Ending balance 11,592 5,644 4,514
Service concession [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 14,824 11,749 9,527
Increases 1,303 947 642
Translation effect 15,544 2,141 2,127
Decreases and reclassifications 31 (13) (547)
Ending balance 31,702 14,824 11,749
Service concession [member] | Accumulated amortization [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 9,180 7,235 5,553
Increases 1,190 615 437
Translation effect 9,740 1,330 1,245
Ending balance 20,110 9,180 7,235
Exploration rights [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 3,465 2,944 2,835
Ending balance 6,907 3,465 2,944
Exploration rights [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 3,465 3,093 2,990
Increases 276 8 75
Translation effect 3,414 513 612
Decreases and reclassifications (248) (149) (584)
Ending balance 6,907 3,465 3,093
Exploration rights [member] | Accumulated amortization [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance   149 155
Decreases and reclassifications   (149) (6)
Ending balance     149
Other intangibles [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 867 656 550
Ending balance 1,903 867 656
Other intangibles [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 6,830 5,494 4,260
Increases 765 198 171
Translation effect 6,636 953 936
Adjustment for inflation 591    
Decreases and reclassifications (100) 185 127
Ending balance 14,722 6,830 5,494
Other intangibles [member] | Accumulated amortization [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 5,963 4,838 3,710
Increases 559 223 280
Translation effect 6,243 885 848
Adjustment for inflation 58    
Decreases and reclassifications (4) 17  
Ending balance $ 12,819 $ 5,963 $ 4,838