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Current Taxes and Deferred Taxes (Details) - Schedule of effect of deferred taxes on income and equity - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Debit differences:    
Deferred tax liability (asset) at beginning of period $ 231,293 $ 176,823
Income effect 58,895 58,733
Equity effect 2,329 (4,263)
Deferred tax liability (asset) at end of period 292,517 231,293
Allowances for loan losses    
Debit differences:    
Deferred tax liability (asset) at beginning of period 151,481 141,875
Income effect 65,880 9,606
Equity effect
Deferred tax liability (asset) at end of period 217,361 151,481
Personnel provisions    
Debit differences:    
Deferred tax liability (asset) at beginning of period 16,997 13,277
Income effect (481) 3,720
Equity effect
Deferred tax liability (asset) at end of period 16,516 16,997
Staff vacations    
Debit differences:    
Deferred tax liability (asset) at beginning of period 7,444 7,241
Income effect 1,720 203
Equity effect
Deferred tax liability (asset) at end of period 9,164 7,444
Accrued interest and indexation adjustments from past due loans    
Debit differences:    
Deferred tax liability (asset) at beginning of period 3,674 3,232
Income effect 896 442
Equity effect
Deferred tax liability (asset) at end of period 4,570 3,674
Staff severance indemnities provision    
Debit differences:    
Deferred tax liability (asset) at beginning of period 1,491 1,484
Income effect (95) (59)
Equity effect 25 66
Deferred tax liability (asset) at end of period 1,421 1,491
Provisions of credit card expenses    
Debit differences:    
Deferred tax liability (asset) at beginning of period 8,221 9,813
Income effect (262) (1,592)
Equity effect
Deferred tax liability (asset) at end of period 7,959 8,221
Provisions of accrued expenses    
Debit differences:    
Deferred tax liability (asset) at beginning of period 10,564 6,908
Income effect 3,519 3,656
Equity effect
Deferred tax liability (asset) at end of period 14,083 10,564
Derivative instruments adjustments    
Debit differences:    
Deferred tax liability (asset) at beginning of period 1,470 1,356
Income effect (109) 114
Equity effect
Deferred tax liability (asset) at end of period 1,361 1,470
Adjustment for valuation and impairment of financial assets at fair value through OCI    
Debit differences:    
Deferred tax liability (asset) at beginning of period 946
Income effect
Equity effect (946)
Deferred tax liability (asset) at end of period
Leasing    
Debit differences:    
Deferred tax liability (asset) at beginning of period 41,792 33,218
Income effect (12,957) 8,574
Equity effect
Deferred tax liability (asset) at end of period 28,835 41,792
Other adjustments    
Debit differences:    
Deferred tax liability (asset) at beginning of period 36,523 1,014
Income effect 965 35,510
Equity effect (1)
Deferred tax liability (asset) at end of period 37,488 36,523
Total debit differences    
Debit differences:    
Deferred tax liability (asset) at beginning of period 279,657 220,364
Income effect 59,076 60,174
Equity effect 25 (881)
Deferred tax liability (asset) at end of period 338,758 279,657
Depreciation of property and equipment and investment properties    
Debit differences:    
Deferred tax liability (asset) at beginning of period 15,524 14,990
Income effect 1,732 534
Equity effect
Deferred tax liability (asset) at end of period 17,256 15,524
Adjustment for valuation and impairment of financial assets at fair value through OCI    
Debit differences:    
Deferred tax liability (asset) at beginning of period 2,445
Income effect 1,256 (937)
Equity effect (2,304) 3,382
Deferred tax liability (asset) at end of period 1,397 2,445
Transitory assets    
Debit differences:    
Deferred tax liability (asset) at beginning of period 8,329 5,514
Income effect (1,796) 2,815
Equity effect
Deferred tax liability (asset) at end of period 6,533 8,329
Derivative instruments adjustments    
Debit differences:    
Deferred tax liability (asset) at beginning of period
Income effect
Equity effect
Deferred tax liability (asset) at end of period
Accrued interest to effective rate    
Debit differences:    
Deferred tax liability (asset) at beginning of period 1,381 1,564
Income effect 1,393 (183)
Equity effect
Deferred tax liability (asset) at end of period 2,774 1,381
Advance payment of lump-sum under union contracts    
Debit differences:    
Deferred tax liability (asset) at beginning of period 3,334 6,699
Income effect (1,100) (3,365)
Equity effect
Deferred tax liability (asset) at end of period 2,234 3,334
Intangible assets amortization    
Debit differences:    
Deferred tax liability (asset) at beginning of period 5,503 5,503
Income effect
Equity effect
Deferred tax liability (asset) at end of period 5,503 5,503
Other adjustments    
Debit differences:    
Deferred tax liability (asset) at beginning of period 11,848 9,271
Income effect (1,304) 2,577
Equity effect
Deferred tax liability (asset) at end of period 10,544 11,848
Total credit differences    
Debit differences:    
Deferred tax liability (asset) at beginning of period 48,364 43,541
Income effect 181 1,441
Equity effect (2,304) 3,382
Deferred tax liability (asset) at end of period $ 46,241 $ 48,364