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Derivative Instruments and Accounting Hedges (Details) - Schedule of bank's portfolio of derivative instruments - CLP ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Cross currency swap [member] | Fair value hedges [member] |  |
Derivatives held for hedging of fair value |  |
Notional amount - hedging | $ 5,031 | $ 8,166
Fair value assets - hedging |  |
Fair value liabilities - hedging | 1,646 | 2,547
Derivatives held-for-trading purposes |  |
Notional amount | 5,031 | 8,166
Interest rate swap [member] |  |
Derivatives held-for-trading purposes |  |
Notional amount - trading | 44,189,444 | 61,411,254
Fair value assets - trading | 1,167,416 | 888,581
Fair value liabilities - trading | 1,189,828 | 886,963
Interest rate swap [member] | Fair value hedges [member] |  |
Derivatives held for hedging of fair value |  |
Notional amount - hedging | 29,508 | 86,317
Fair value assets - hedging |  | 32
Fair value liabilities - hedging | 4,873 | 6,739
Derivatives held-for-trading purposes |  |
Notional amount | 29,508 | 86,317
Derivatives [member] |  |
Derivatives held-for-trading purposes |  |
Notional amount - trading | 84,963,153 | 114,823,568
Fair value assets - trading | 2,566,942 | 2,724,621
Fair value liabilities - trading | 2,769,962 | 2,774,692
Notional amount | 86,215,149 | 116,099,933
Fair value assets | 2,618,004 | 2,786,215
Fair value liabilities | 2,841,653 | 2,818,421
Derivatives [member] | Fair value hedges [member] |  |
Derivatives held for hedging of fair value |  |
Notional amount - hedging | 34,539 | 94,483
Fair value assets - hedging |  | 32
Fair value liabilities - hedging | 6,519 | 9,286
Derivatives [member] | Cash flow hedges [member] |  |
Derivatives held for hedging of fair value |  |
Notional amount - hedging | 1,217,457 | 1,181,882
Fair value assets - hedging | 51,062 | 61,562
Fair value liabilities - hedging | 65,172 | 34,443
Interest rate swap and cross currency swap [member] | Cash flow hedges [member] |  |
Derivatives held for hedging of fair value |  |
Notional amount - hedging | 1,217,457 | 1,181,882
Fair value assets - hedging | 51,062 | 61,562
Fair value liabilities - hedging | 65,172 | 34,443
Currency forward [member] |  |
Derivatives held-for-trading purposes |  |
Notional amount - trading | 21,751,181 | 34,499,472
Fair value assets - trading | 551,964 | 956,632
Fair value liabilities - trading | 637,164 | 673,932
Cross currency swap and interest rate swap [member] |  |
Derivatives held-for-trading purposes |  |
Notional amount - trading | 18,893,219 | 18,575,756
Fair value assets - trading | 845,831 | 873,371
Fair value liabilities - trading | 940,565 | 1,210,059
Call currency options [member] |  |
Derivatives held-for-trading purposes |  |
Notional amount - trading | 71,914 | 178,414
Fair value assets - trading | 269 | 4,961
Fair value liabilities - trading | 306 | 1,529
Put currency options [member] |  |
Derivatives held-for-trading purposes |  |
Notional amount - trading | 57,395 | 158,672
Fair value assets - trading | 1,462 | 1,076
Fair value liabilities - trading | $ 2,099 | $ 2,209

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