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Derivative Instruments and Accounting Hedges - Fair Value Hedges (Details) - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Bank's portfolio of derivative instruments |  |
Notional Amounts | $ 132,441 | $ 163,654
Fair value hedge | Cross currency swap |  |
Bank's portfolio of derivative instruments |  |
Notional Amounts | 11,132 | 13,914
Fair value hedge | Interest rate swap |  |
Bank's portfolio of derivative instruments |  |
Notional Amounts | 226,954 | 78,970
Commercial loans | Fair value hedge |  |
Bank's portfolio of derivative instruments |  |
Notional Amounts | 11,132 | 13,914
Corporate bonds | Fair value hedge |  |
Bank's portfolio of derivative instruments |  |
Notional Amounts | $ 226,954 | $ 78,970

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