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Intangible Assets (Details) - Schedule of changes in intangible assets
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2020
CLP ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CLP ($)
Dec. 31, 2018
CLP ($)
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period $ 91,717      
Amortization for the year 15,865   $ 12,875 $ 10,496
Intangible assets and goodwill at end of period 94,111 $ 132,197 91,717  
Net balance 94,111   91,717  
Goodwill [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Net balance [1] 16,714   16,714  
Intangible assets arising from business combinations [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Net balance [2] 16,696   16,696  
Software or computer programs [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Net balance 60,701   58,307  
Gross Balance [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period 236,474   217,931  
Acquisitions 18,631   20,928  
Disposals/write-downs (387)   (1,759)  
Reclassification (16)   (276)  
Impairment [3] (1,044)   (350)  
Intangible assets and goodwill at end of period 253,658   236,474 217,931
Gross Balance [Member] | Goodwill [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period [1] 16,714   16,714  
Acquisitions [1]    
Disposals/write-downs [1]    
Reclassification [1]    
Impairment [1],[3]    
Intangible assets and goodwill at end of period [1] 16,714   16,714 16,714
Gross Balance [Member] | Intangible assets arising from business combinations [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period [2] 56,249   56,249  
Acquisitions [2]    
Disposals/write-downs [2]    
Reclassification [2]    
Impairment [2],[3]    
Intangible assets and goodwill at end of period [2] 56,249   56,249 56,249
Gross Balance [Member] | Software or computer programs [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period 163,511   144,968  
Acquisitions 18,631   20,928  
Disposals/write-downs (387)   (1,759)  
Reclassification (16)   (276)  
Impairment [3] (1,044)   (350)  
Intangible assets and goodwill at end of period 180,695   163,511 144,968
Accumulated Amortization [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period (144,757)   (132,460)  
Amortization for the year (15,865)   (12,875)  
Disposals/write-downs 660   316  
Reclassification   262  
Impairment [3] 415    
Intangible assets and goodwill at end of period (159,547)   (144,757) (132,460)
Accumulated Amortization [Member] | Goodwill [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period [1]    
Amortization for the year [1]    
Disposals/write-downs [1]    
Reclassification [1]    
Impairment [1],[3]    
Intangible assets and goodwill at end of period [1]  
Accumulated Amortization [Member] | Intangible assets arising from business combinations [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period [2] (39,553)   (39,553)  
Amortization for the year [2]    
Disposals/write-downs [2]    
Reclassification [2]    
Impairment [2],[3]    
Intangible assets and goodwill at end of period [2] (39,553)   (39,553) (39,553)
Accumulated Amortization [Member] | Software or computer programs [Member]        
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items]        
Intangible assets and goodwill at beginning of period (105,204)   (92,907)  
Amortization for the year (15,865)   (12,875)  
Disposals/write-downs 660   316  
Reclassification   262  
Impairment [3] 415    
Intangible assets and goodwill at end of period $ (119,994)   $ (105,204) $ (92,907)
[1] Goodwill corresponds mainly to business combination with Citibank Chile whose amount is of MCh$12,576 that represents the value of synergies to be generated in the combination process and the acquisition of know-how.
[2] Intangible assets arising from business combinations include assets with indefinite useful lives acquired in the business combination with Citibank Chile.
[3] See Note No. 36 Depreciation, Amortization and Impairment.