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Pension Plans (Details) - Schedule of plan expected profit | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Schedule Of Plan Expected Profit Abstract |  |  |
Type of expected yield from the plan’s assets | UF + 2.50% annually | UF + 2.50% annually | UF + 2.50% annually
Type of yield expected from the reimbursement rights | UF + 2.50% annually | UF + 2.50% annually | UF + 2.50% annually

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

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- Definition Represent information about the type of expected yield from the plan&amp;amp;amp;amp;amp;#8217;s assets. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Represent information about the type of expected yield from the reimbursement rights. + References No definition available. + Details
Name: | bsac_TypeOfExpectedYieldFromReimbursementRights
Namespace Prefix: | bsac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration