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Fair Value of Financial Assets and Liabilities (Details) - Narrative | 12 Months Ended
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Dec. 31, 2024
Interest income and interest expense for financial assets or financial liabilities not at fair value through profit or loss [abstract] |
Observable market valued rate | 100.00%

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- Definition Observable market are valued rate. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration