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Depreciation, Amortization and Impairment (Tables)
 12 Months Ended
Dec. 31, 2021
Depreciation Amortization And Impairment Expense [Abstract]  
Schedule of depreciation and amortization
   2019   2020   2021 
   MCh$   MCh$   MCh$ 
             
Depreciation and amortization            
Depreciation of property and equipment (Note No.16(b) and Note No. 16)   29,194    29,845    29,768 
Depreciation of rights over leased assets (Note No. 16(d))   28,472    27,647    29,199 
Amortization of intangibles assets (Note No.15 (b))   12,875    15,865    17,831 
Total   70,541    73,357    76,798 

 
Schedule of impairment loss
   2019   2020   2021 
   MCh$   MCh$   MCh$ 
             
Impairment loss            
Impairment loss on intangibles assets (Note No.15(b))   350    629    1,647 
Impairment loss on property and equipment (Note No.16(b))   2,018    1,031    43 
Impairment of rights over leased assets (Note No. 16(d))   187    1    — 
Total   2,555    1,661    1,690