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v3.25.0.1

Risk Management (Details) - Schedule of Probabilities - Probability weighting | 12 Months Ended
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Dec. 31, 2024
Local scenario |
Schedule of Probabilities [Line Items] |
Favorable scenario 2 | 10.00%
Favorable scenario 1 | 15.00%
Base scenario | 50.00%
Unfavorable scenario 1 | 15.00%
Unfavorable scenario 2 | 10.00%
Global scenario |
Schedule of Probabilities [Line Items] |
Favorable scenario 1 | 30.00%
Base scenario | 40.00%
Unfavorable scenario 1 | 30.00%

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- Definition Percentage Of Base Scenario + References No definition available. + Details
Name: | bsac_PercentageOfBaseScenario
Namespace Prefix: | bsac_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage Of Favorable Scenario One + References No definition available. + Details
Name: | bsac_PercentageOfFavorableScenarioOne
Namespace Prefix: | bsac_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage Of Favorable Scenario Two + References No definition available. + Details
Name: | bsac_PercentageOfFavorableScenarioTwo
Namespace Prefix: | bsac_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage Of Unfavorable Scenario One + References No definition available. + Details
Name: | bsac_PercentageOfUnfavorableScenarioOne
Namespace Prefix: | bsac_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage Of Unfavorable Scenario Two + References No definition available. + Details
Name: | bsac_PercentageOfUnfavorableScenarioTwo
Namespace Prefix: | bsac_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Schedule of Probabilities [Line Items] + References No definition available. + Details
Name: | bsac_ScheduleOfProbabilitiesLineItems
Namespace Prefix: | bsac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | bsac_RangesAxis=bsac_ProbabilityWeightingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | bsac_MacroeconomicAxis=bsac_LocalScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | bsac_MacroeconomicAxis=bsac_GlobalScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |