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Risk Management (Details) - Schedule of regulatory capital $ in Thousands | Dec. 31, 2021 CLP ($)
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Schedule of regulatory capital [Abstract] |
Common Equity Tier 1 capital (CET1) | $ 3,494,580,000
Common Equity Tier 1 capital (CET1) | 5.73%
Regulatory capital | $ 5,776,831
Regulatory capital | 15.86%

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- Definition Amount of common equity tier capital. + References No definition available. + Details
Name: | bsac_CommonEquityTierCapital
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represent information about common equity tier capital percent. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represent information about regulatory capital percent. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represent information about regulatory capital. + References No definition available. + Details
Name: | bsac_RegulatoriesCapitalPercentage
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | bsac_
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