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Fair Value of Financial Assets and Liabilities - Schedule of Fair Value Financial Assets and Liabilities not Measured at Fair Value on the Balance Sheet (Details) - Estimated Fair Value [Member] - CLP ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets |  |
Cash and due from banks | $ 2,699,076 | $ 2,464,648
Transactions in the course of collection | 372,456 | 415,505
Subtotal | 3,071,532 | 2,880,153
Financial assets at amortized cost |  |
Rights by resale agreements and securities lending | 87,291 | 71,822
Debt financial instruments | 892,550 | 1,368,416
Loans and advances to Banks |  |
Domestic banks | 299,147 |
Central Bank of Chile |  | 2,100,933
Foreign banks | 366,245 | 412,662
Subtotal | 1,645,233 | 3,953,833
Loans to customers, net |  |
Commercial loans | 19,561,279 | 19,193,778
Residential mortgage loans | 13,000,178 | 11,656,071
Consumer loans | 5,247,985 | 5,025,163
Subtotal | 37,809,442 | 35,875,012
Total | 42,526,207 | 42,708,998
Liabilities |  |
Transactions in the course of payment | 283,605 | 356,871
Financial liabilities at amortized cost |  |
Current accounts and other demand deposits | 14,630,797 | 13,670,793
Saving accounts and time deposits | 14,346,676 | 15,536,406
Obligations by repurchase agreements and securities lending | 109,794 | 157,173
Borrowings from financial institutions | 1,071,097 | 5,152,776
Debt financial instruments issued |  |
Letters of credit for residential purposes | 946 | 1,533
Letters of credit for general purposes | 1 | 12
Bonds | 9,596,699 | 9,090,188
Other financial obligations | 284,479 | 339,327
Subtotal | 40,040,489 | 43,948,208
Debt financial instruments issued for regulatory capital purposes |  |
Subordinate bonds | 1,057,509 | 1,035,801
Total | 41,381,603 | 45,340,880
Level 1 [Member] |  |
Assets |  |
Cash and due from banks | 2,699,076 | 2,464,648
Transactions in the course of collection | 372,456 | 415,505
Subtotal | 3,071,532 | 2,880,153
Financial assets at amortized cost |  |
Rights by resale agreements and securities lending | 87,291 | 71,822
Debt financial instruments | 892,550 | 1,368,416
Loans and advances to Banks |  |
Domestic banks | 299,147 |
Central Bank of Chile |  | 2,100,933
Foreign banks |  |
Subtotal | 1,278,988 | 3,541,171
Loans to customers, net |  |
Commercial loans |  |
Residential mortgage loans |  |
Consumer loans |  |
Subtotal |  |
Total | 4,350,520 | 6,421,324
Liabilities |  |
Transactions in the course of payment | 283,605 | 356,871
Financial liabilities at amortized cost |  |
Current accounts and other demand deposits | 14,630,797 | 13,670,793
Saving accounts and time deposits |  |
Obligations by repurchase agreements and securities lending | 109,794 | 157,173
Borrowings from financial institutions |  |
Debt financial instruments issued |  |
Letters of credit for residential purposes |  |
Letters of credit for general purposes |  |
Bonds |  |
Other financial obligations |  |
Subtotal | 14,740,591 | 13,827,966
Debt financial instruments issued for regulatory capital purposes |  |
Subordinate bonds |  |
Total | 15,024,196 | 14,184,837
Level 2 [Member] |  |
Assets |  |
Cash and due from banks |  |
Transactions in the course of collection |  |
Subtotal |  |
Financial assets at amortized cost |  |
Rights by resale agreements and securities lending |  |
Debt financial instruments |  |
Loans and advances to Banks |  |
Domestic banks |  |
Central Bank of Chile |  |
Foreign banks |  |
Subtotal |  |
Loans to customers, net |  |
Commercial loans |  |
Residential mortgage loans |  |
Consumer loans |  |
Subtotal |  |
Total |  |
Liabilities |  |
Transactions in the course of payment |  |
Financial liabilities at amortized cost |  |
Current accounts and other demand deposits |  |
Saving accounts and time deposits |  |
Obligations by repurchase agreements and securities lending |  |
Borrowings from financial institutions |  |
Debt financial instruments issued |  |
Letters of credit for residential purposes | 946 | 1,533
Letters of credit for general purposes | 1 | 12
Bonds | 9,596,699 | 9,090,188
Other financial obligations |  |
Subtotal | 9,597,646 | 9,091,733
Debt financial instruments issued for regulatory capital purposes |  |
Subordinate bonds |  |
Total | 9,597,646 | 9,091,733
Level 3 [Member] |  |
Assets |  |
Cash and due from banks |  |
Transactions in the course of collection |  |
Subtotal |  |
Financial assets at amortized cost |  |
Rights by resale agreements and securities lending |  |
Debt financial instruments |  |
Loans and advances to Banks |  |
Domestic banks |  |
Central Bank of Chile |  |
Foreign banks | 366,245 | 412,662
Subtotal | 366,245 | 412,662
Loans to customers, net |  |
Commercial loans | 19,561,279 | 19,193,778
Residential mortgage loans | 13,000,178 | 11,656,071
Consumer loans | 5,247,985 | 5,025,163
Subtotal | 37,809,442 | 35,875,012
Total | 38,175,687 | 36,287,674
Liabilities |  |
Transactions in the course of payment |  |
Financial liabilities at amortized cost |  |
Current accounts and other demand deposits |  |
Saving accounts and time deposits | 14,346,676 | 15,536,406
Obligations by repurchase agreements and securities lending |  |
Borrowings from financial institutions | 1,071,097 | 5,152,776
Debt financial instruments issued |  |
Letters of credit for residential purposes |  |
Letters of credit for general purposes |  |
Bonds |  |
Other financial obligations | 284,479 | 339,327
Subtotal | 15,702,252 | 21,028,509
Debt financial instruments issued for regulatory capital purposes |  |
Subordinate bonds | 1,057,509 | 1,035,801
Total | $ 16,759,761 | $ 22,064,310

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