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Fair Value of Financial Assets and Liabilities-Fair value of Financial Assets/Liabilities not measured at fair value on the balance sheet (Details) - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Financial instrument disclosures |  |
Financial Assets | $ 4,312,504 | $ 4,390,903
Financial Liabilities | 1,528,234 | 1,392,995
Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 30,102,202 | 27,120,715
Financial Liabilities | 29,699,243 | 27,029,913
Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 30,270,446 | 27,185,188
Financial liabilities at fair value | 29,838,379 | 27,161,529
Cash and other transactions | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 1,266,564 | 1,405,002
Cash and other transactions | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 1,266,564 | 1,405,002
Cash and due from banks | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 880,081 | 1,057,393
Cash and due from banks | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 880,081 | 1,057,393
Transactions in the course of collection | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 289,194 | 255,968
Transactions in the course of collection | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 289,194 | 255,968
Cash collateral on securities borrowed and reverse repurchase agreements | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 97,289 | 91,641
Cash collateral on securities borrowed and reverse repurchase agreements | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 97,289 | 91,641
Loans and advances to banks | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 1,494,384 | 760,021
Loans and advances to banks | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 1,486,670 | 760,021
Domestic banks | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 99,776 | 119,998
Domestic banks | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 99,776 | 119,998
Central Bank of Chile | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 1,100,831 | 350,916
Central Bank of Chile | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 1,100,831 | 350,916
Foreign banks | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 293,777 | 289,107
Foreign banks | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 286,063 | 289,107
Loans to customers | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 27,341,254 | 24,955,692
Loans to customers | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 27,517,212 | 25,020,165
Commercial loans | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 15,209,534 | 13,739,589
Commercial loans | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 14,949,852 | 13,477,466
Mortgage loans | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 8,017,743 | 7,445,221
Mortgage loans | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 8,451,099 | 7,769,694
Consumer loans | Book Value |  |
Financial instrument disclosures |  |
Financial Assets | 4,113,977 | 3,770,882
Consumer loans | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial assets at fair value | 4,116,261 | 3,773,005
Current and saving accounts and other financial obligations | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 22,223,691 | 20,540,938
Current and saving accounts and other financial obligations | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 22,191,058 | 20,540,105
Current accounts and other demand deposits | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 9,584,488 | 8,915,706
Current accounts and other demand deposits | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 9,584,488 | 8,915,706
Transactions in the course of payment | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 44,436 | 29,871
Transactions in the course of payment | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 44,436 | 29,871
Cash collateral on securities lent and reverse repurchase agreements | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 303,820 | 195,392
Cash collateral on securities lent and reverse repurchase agreements | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 303,820 | 195,392
Saving accounts and time deposits | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 10,656,174 | 10,067,778
Saving accounts and time deposits | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 10,632,350 | 10,073,030
Borrowings from financial institutions | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 1,516,759 | 1,195,028
Borrowings from financial institutions | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 1,506,940 | 1,188,943
Other financial obligations | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 118,014 | 137,163
Other financial obligations | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 119,024 | 137,163
Debt issued | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 7,475,552 | 6,488,975
Debt issued | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 7,647,321 | 6,621,424
Letters of credit for residential purposes | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 15,040 | 21,059
Letters of credit for residential purposes | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 15,982 | 22,542
Letters of credit for general purposes | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 1,328 | 2,365
Letters of credit for general purposes | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 1,411 | 2,532
Bonds | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 6,772,990 | 5,769,334
Bonds | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | 6,897,317 | 5,896,424
Subordinated bonds | Book Value |  |
Financial instrument disclosures |  |
Financial Liabilities | 686,194 | 696,217
Subordinated bonds | Fair Value - not measured at fair value |  |
Financial instrument disclosures |  |
Financial liabilities at fair value | $ 732,611 | $ 699,926

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