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Debt Instruments at Fair Value Through Other Comprehensive Income (Details 3) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | $ 16,767 | $ 21,921
Fair value | 19,556 | 24,827
Unrealized profit | 2,789 | 3,114
Unrealized loss |  | (209)
Foreign Financial Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 611,488 | 454,408
Fair value | 623,159 | 448,459
Unrealized profit | 24,190 | 602
Unrealized loss | (12,519) | (6,575)
Available for Sale Investments [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 3,981,088 | 2,387,898
Fair value | 4,010,272 | 2,394,322
Unrealized profit | 68,818 | 18,112
Unrealized loss | (39,634) | (11,688)
Time Deposits In Chilean Financial Institutions [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 398 | 2,691
Fair value | 398 | 2,693
Unrealized profit |  | 1
Unrealized loss |  |
Mortgage Finance Bonds Of Chilean Financial Institutions [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 15,962 | 19,010
Fair value | 16,748 | 19,227
Unrealized profit | 786 | 426
Unrealized loss |  | (209)
Chilean Financial Institution Bonds [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost |  |
Fair value |  |
Unrealized profit |  |
Unrealized loss |  |
Chilean Corporate Bonds [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost |  |
Fair value |  |
Unrealized profit |  |
Unrealized loss |  |
Other Instruments Issued in The Country [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 407 | 220
Fair value | 2,410 | 2,907
Unrealized profit | 2,003 | 2,687
Unrealized loss |  |
Foreign Central Banks And Government Securities [Member] | Foreign Financial Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 198,020 | 280,021
Fair value | 197,685 | 280,622
Unrealized profit | 11,110 | 602
Unrealized loss | (11,445) |
Other Foreign Financial Securities [Member] | Foreign Financial Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 413,468 | 174,387
Fair value | 425,474 | 167,837
Unrealized profit | 13,080 |
Unrealized loss | (1,074) | (6,575)
Chilean Central Bank And Government Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 3,352,833 | 1,911,569
Fair value | 3,367,557 | 1,921,035
Unrealized profit | 41,839 | 14,397
Unrealized loss | (27,115) | (4,904)
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Bonds [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 270,979 | 658,013
Fair value | 272,802 | 657,096
Unrealized profit | 3,600 | 3,698
Unrealized loss | (1,777) | (4,615)
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Notes [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 1,186,487 | 56,737
Fair value | 1,186,724 | 56,719
Unrealized profit | 237 | 10
Unrealized loss |  | (27)
Chilean Central Bank And Government Securities [Member] | Other Chilean Central Bank And Government Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Amortized cost | 1,895,367 | 1,196,819
Fair value | 1,908,031 | 1,207,220
Unrealized profit | 38,002 | 10,689
Unrealized loss | $ (25,338) | $ (262)

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