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Provisions - Summary of Expected Term to Settle Obligations (Detail) - ARS ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of other provisions [line items]      
Provisions $ 1,310,517 $ 2,006,052 $ 2,212,835
For administrative, disciplinary and criminal penalties [member]      
Disclosure of other provisions [line items]      
Provisions 718 977 1,503
Letter of credits, guarantee and other commitments [member]      
Disclosure of other provisions [line items]      
Provisions 23,200 23,514 22,472
Commercial claims [member]      
Disclosure of other provisions [line items]      
Provisions 689,117 1,142,840 1,196,640
Legal proceedings provision [member]      
Disclosure of other provisions [line items]      
Provisions 227,751 241,424 230,566
Pension Funds - Reimbursement [member]      
Disclosure of other provisions [line items]      
Provisions 88,851 217,622 260,269
Miscellaneous other provisions [member]      
Disclosure of other provisions [line items]      
Provisions 280,880 $ 379,675 $ 501,385
Current [member]      
Disclosure of other provisions [line items]      
Provisions 787,999    
Current [member] | For administrative, disciplinary and criminal penalties [member]      
Disclosure of other provisions [line items]      
Provisions 718    
Current [member] | Letter of credits, guarantee and other commitments [member]      
Disclosure of other provisions [line items]      
Provisions 23,200    
Current [member] | Commercial claims [member]      
Disclosure of other provisions [line items]      
Provisions 434,658    
Current [member] | Legal proceedings provision [member]      
Disclosure of other provisions [line items]      
Provisions 47,239    
Current [member] | Pension Funds - Reimbursement [member]      
Disclosure of other provisions [line items]      
Provisions 32,005    
Current [member] | Miscellaneous other provisions [member]      
Disclosure of other provisions [line items]      
Provisions 250,179    
Later than one year [member]      
Disclosure of other provisions [line items]      
Provisions 522,518    
Later than one year [member] | Commercial claims [member]      
Disclosure of other provisions [line items]      
Provisions 254,459    
Later than one year [member] | Legal proceedings provision [member]      
Disclosure of other provisions [line items]      
Provisions 180,512    
Later than one year [member] | Pension Funds - Reimbursement [member]      
Disclosure of other provisions [line items]      
Provisions 56,846    
Later than one year [member] | Miscellaneous other provisions [member]      
Disclosure of other provisions [line items]      
Provisions $ 30,701