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v3.22.4

Risk Management (Details) - Schedule of exposure to liquidity risk | Dec. 31, 2022 | Dec. 31, 2021
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30 Days [Member] |  |
Risk Management (Details) - Schedule of exposure to liquidity risk [Line Items] |  |
Percentages of exposure to liquidity risk |  | 1.00%
30 Days Foreign Currency [Member] |  |
Risk Management (Details) - Schedule of exposure to liquidity risk [Line Items] |  |
Percentages of exposure to liquidity risk |  | 2.00%
90 Days [Member] |  |
Risk Management (Details) - Schedule of exposure to liquidity risk [Line Items] |  |
Percentages of exposure to liquidity risk |  | 2.00%

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- Definition Represent information about percentages of exposureto liquidity risk. + References No definition available. + Details
Name: | bsac_PercentagesOfExposureToLiquidityRisk
Namespace Prefix: | bsac_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneMonthMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=bsac_ForeignCurrencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanThreeMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |