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Risk Management (Details) - Schedule of Allowance and Exposure at Default (Ead) of the Loans - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure of risk management strategy related to hedge accounting [abstract] |  |
Loans and account receivable | $ 382,737 | $ 347,477
ECL allowance calculated on an individual basis | 165,935 | 155,903
Loans and account receivable (commercial, mortgage and consumer loans) | 40,941,107 | 40,464,409
Allowance for ECL – collective basis | $ 1,026,755 | $ 994,088

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- Definition Allowance For ECL + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Allowance For ECLCollective Basis + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The amount of non-derivative financial assets with fixed or determinable payments that are not quoted in an active market, other than: (a) those that the entity intends to sell immediately or in the near term, which shall be classified as held for trading, and those that the entity, upon initial recognition, designates as at fair value through profit or loss; (b) those that the entity, upon initial recognition, designates as available for sale; or (c) those for which the holder may not recover substantially all of its initial investment, other than because of credit deterioration, which shall be classified as available for sale. An interest acquired in a pool of assets that are not loans or receivables (for example, an interest in a mutual fund or a similar fund) is not a loan or receivable. [Refer: Derivative financial assets] + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of loans and account receivable (commercial, mortgage and consumer loans). + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
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- References No definition available. + Details
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