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Current Taxes and Deferred Taxes - Effect of deferred taxes on income and equity (Details) - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2016
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | $ 184,465 | $ 176,923
Income effect | 4,582 | (14,314)
Equity effect | 3,793 | (1,344)
Deferred tax liability (asset) at end of period | 192,840 | 161,265
Total debit differences |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 227,051 | 220,564
Income effect | 7,929 | (16,669)
Equity effect | 1,401 | (44)
Deferred tax liability (asset) at end of period | 236,381 | 203,851
Allowances for loan losses |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 138,643 | 127,719
Income effect | 3,232 | (12,276)
Deferred tax liability (asset) at end of period | 141,875 | 115,443
Personnel provisions |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 12,521 | 11,231
Income effect | 756 | 1,290
Deferred tax liability (asset) at end of period | 13,277 | 12,521
Staff vacations |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 6,908 | 6,674
Income effect | 333 | 234
Deferred tax liability (asset) at end of period | 7,241 | 6,908
Accrued interest and indexation adjustments from past due loans |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 3,414 | 3,355
Income effect | (182) | 59
Deferred tax liability (asset) at end of period | 3,232 | 3,414
Staff severance indemnities provision |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 1,457 | 1,854
Income effect | (8) | (352)
Equity effect | 35 | (45)
Deferred tax liability (asset) at end of period | 1,484 | 1,457
Provisions of credit card expenses |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 8,955 | 12,459
Income effect | 858 | (3,504)
Deferred tax liability (asset) at end of period | 9,813 | 8,955
Provisions of accrued expenses |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 16,358 | 14,489
Income effect | (3,203) | 1,869
Deferred tax liability (asset) at end of period | 13,155 | 16,358
Derivative instruments adjustments |  |
Effect of deferred taxes on income and equity |  |
Income effect | 1,356 |
Deferred tax liability (asset) at end of period | 1,356 |
Adjustment for valuation and impairment of financial assets at fair value through OCI |  |
Effect of deferred taxes on income and equity |  |
Income effect | (419) |
Equity effect | 1,365 |
Deferred tax liability (asset) at end of period | 946 |
Leasing |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 32,549 | 37,119
Income effect | 10,439 | (4,570)
Deferred tax liability (asset) at end of period | 42,988 | 32,549
Other adjustments |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 6,246 | 5,664
Income effect | (5,233) | 581
Equity effect | 1 | 1
Deferred tax liability (asset) at end of period | 1,014 | 6,246
Total credit differences |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 42,586 | 43,641
Income effect | 3,347 | (2,355)
Equity effect | (2,392) | 1,300
Deferred tax liability (asset) at end of period | 43,541 | 42,586
Depreciation of property and equipment and investment properties |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 14,281 | 11,815
Income effect | 709 | 2,466
Deferred tax liability (asset) at end of period | 14,990 | 14,281
Adjustment for valuation and impairment of financial assets at fair value through OCI |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 2,392 | 1,092
Income effect |  | 1
Equity effect | (2,392) | 1,299
Deferred tax liability (asset) at end of period |  | 2,392
Transitory assets |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 5,486 | 4,772
Income effect | 28 | 714
Deferred tax liability (asset) at end of period | 5,514 | 5,486
Derivative instruments adjustments |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 4,378 | 7,707
Income effect | (4,378) | (3,329)
Deferred tax liability (asset) at end of period |  | 4,378
Accrued interest to effective rate |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 1,603 | 2,247
Income effect | (39) | (644)
Deferred tax liability (asset) at end of period | 1,564 | 1,603
Advance payment of lump-sum under union contracts |  |
Effect of deferred taxes on income and equity |  |
Income effect | 6,699 |
Deferred tax liability (asset) at end of period | 6,699 |
Intangible assets amortization |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 5,503 | 6,090
Income effect |  | (587)
Deferred tax liability (asset) at end of period | 5,503 | 5,503
Other adjustments |  |
Effect of deferred taxes on income and equity |  |
Deferred tax liability (asset) at beginning of period | 8,943 | 9,918
Income effect | 328 | (976)
Equity effect |  | 1
Deferred tax liability (asset) at end of period | $ 9,271 | $ 8,943

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