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Fair Value of Financial Assets and Liabilities-Offsetting of financial assets and liabilities (Details) - Derivatives - CLP ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Effect of offsetting on assets balance sheet    
Gross amount $ 2,786,215 $ 1,513,947
Net amounts reported on the balance sheet 2,786,215 1,513,947
Related amount not offset    
Financial Instruments (2,113,970) (1,007,130)
Financial Collateral (43,337) (30,036)
Net amount 628,908 476,781
Effect of offsetting on liabilities balance sheet    
Gross amount 2,818,421 1,528,234
Net amounts reported on the balance sheet 2,818,421 1,528,234
Related amount not offset    
Financial Instruments (2,113,970) (1,007,130)
Financial Collateral (418,988) (233,450)
Net amount $ 285,463 $ 287,654