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Risk Management (Details) - Schedule of Liquidity Coverage Ratio | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Schedule of Liquidity Coverage Ratio [Abstract] |  |
Liquidity Coverage Ratio | 212.00% | 175.00%

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- Definition The percentage of liquidity coverage ratio is the requirement whereby banks must hold an amount of high-quality liquid assets that's enough to fund cash outflows for 30 days. + References No definition available. + Details
Name: | bsac_LiquidityCoverageRatio
Namespace Prefix: | bsac_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration