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Loans - Additional Information (Detail)
$ in Millions
 12 Months Ended
Feb. 11, 2021
USD ($)
Jan. 07, 2021
USD ($)
Jul. 31, 2020
USD ($)
Jul. 13, 2020
USD ($)
Jul. 02, 2020
USD ($)
Mar. 23, 2016
USD ($)
Dec. 31, 2021
ARS ($)
Dec. 31, 2020
ARS ($)
Dec. 31, 2021
USD ($)
Feb. 12, 2021
USD ($)
Aug. 31, 2020
USD ($)
Apr. 28, 2017
USD ($)
Disclosure of detailed information about loans [line items]                        
GainLossesFrom from debt exchange [1]             $ 1,855 $ (2,097)        
Negotiable Obligations [member]                        
Disclosure of detailed information about loans [line items]                        
Percentage of discounted present value of the remaining cash flows             10.00%          
GainLossesFrom from debt exchange             $ 1,855 $ 2,097        
Negotiable Obligations [member] | Debt Exchange [Member]                        
Disclosure of detailed information about loans [line items]                        
Borrowings, maturity 2021                      
Negotiable Obligations [member] | Debt Exchange [Member] | Class XVI [Member]                        
Disclosure of detailed information about loans [line items]                        
Percentage of outstanding loan principal   50.00%                    
Percentage of outstanding capital stock   50.00%                    
Negotiable Obligations [member] | Debt Exchange [Member] | Class XLVII [Member]                        
Disclosure of detailed information about loans [line items]                        
Refinancing percentage 60.00%                      
Negotiable Obligations [member] | Debt Exchange authorized payment by BCRA [Member] | Class VIII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value $ 9,000,000                      
Negotiable Obligations [member] | Major Issuance Of Negotiable Obligations [Member] | Class XVI [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   $ 775,800,000    
Negotiable Obligations [member] | Major Issuance Of Negotiable Obligations [Member] | Class XVIII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                 $ 575,600,000      
Negotiable Obligations [member] | Major Issuance Of Negotiable Obligations [Member] | Class XVII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   747,800,000    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class XLVII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   247,300,000    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class XIII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   201,700,000    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class XXXIX [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   368,200,000    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class LIII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   190,700,000    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class I [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   101,000,000.0    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class LIV [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   213,400,000    
Negotiable Obligations [member] | Major Debt Swap [Member] | Class XXVIII [Member]                        
Disclosure of detailed information about loans [line items]                        
Principal value                   $ 656,400,000    
ClassXIII NO [Member]                        
Disclosure of detailed information about loans [line items]                        
Payment of cash for debt note exchange     $ 90,000,000 $ 125                
Notes and debentures issued       1,000             $ 542,800,000  
ClassXLVII NO [Member]                        
Disclosure of detailed information about loans [line items]                        
Borrowings, maturity     58.73                  
Notional amount     $ 587,300,000                  
currency US [Member] | ClassXIII NO [Member]                        
Disclosure of detailed information about loans [line items]                        
Borrowings, maturity         2025              
Notional amount         $ 950,000,000              
Payment of cash for debt note exchange         100              
currency US [Member] | ClassXLVII NO [Member]                        
Disclosure of detailed information about loans [line items]                        
Borrowings, maturity           2021            
Notional amount           $ 1,000,000,000            
Notes and debentures issued         $ 1,000              
Frequent Issuer regime [member]                        
Disclosure of detailed information about loans [line items]                        
Principal value   $ 6,500,000,000                    
Top of range [member] | Negotiable Obligations [member] | Debt Exchange [Member]                        
Disclosure of detailed information about loans [line items]                        
Percentage of appreciation or depreciation on exchange rate   9.00%                    
Top of range [member] | Negotiable Obligations [member] | Debt Exchange [Member] | Class XLVII [Member]                        
Disclosure of detailed information about loans [line items]                        
Proportion of global exchange participation in loans 59.80%                      
Top of range [member] | ClassXIII NO [Member]                        
Disclosure of detailed information about loans [line items]                        
Notional amount       $ 925,000,000                
Top of range [member] | currency US [Member] | ClassXIII NO [Member]                        
Disclosure of detailed information about loans [line items]                        
Borrowings, interest rate         8.50%              
Top of range [member] | Medium Term Notes [member]                        
Disclosure of detailed information about loans [line items]                        
Notes and debentures issued                       $ 10,000,000,000
Bottom of range [member] | Negotiable Obligations [member] | Debt Exchange [Member]                        
Disclosure of detailed information about loans [line items]                        
Percentage of appreciation or depreciation on exchange rate   1.50%                    
Bottom of range [member] | Negotiable Obligations [member] | Debt Exchange [Member] | Class XLVII [Member]                        
Disclosure of detailed information about loans [line items]                        
Proportion of global exchange participation in loans 32.00%                      
[1] See Note 21.