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Risk Management (Details) - Schedule of Liquidity Coverage Ratio | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure of risk management strategy related to hedge accounting [abstract] |  |
LCR | 191.00% | 212.00%

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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
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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
Name: | ifrs-full_DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration