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v3.19.3.a.u2

Contingencies and Commitments (Details) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Contingencies and Commitments [Abstract] |  |
Letters of credit issued | $ 140,572 | $ 223,420
Foreign letters of credit confirmed | 70,192 | 57,038
Performance guarantee | 1,929,894 | 1,954,205
Personal guarantees | 451,950 | 133,623
Total contingent liabilities | 2,592,608 | 2,368,286
Available on demand credit lines | 8,732,422 | 8,997,650
Other irrevocable credit commitments | 485,991 | 327,297
Total loan commit ment | 9,218,413 | 9,324,947
Total | $ 11,811,021 | $ 11,693,233

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- Definition Represent information about available on demand credit lines. + References No definition available. + Details
Name: | bsac_AvailableOnDemandCreditLines
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Contingencies and Commitments [Abstract] + References No definition available. + Details
Name: | bsac_ContingenciesAndCommitmentsAbstract
Namespace Prefix: | bsac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount refers to contingents liabilities regonised loans loss allowance. + References No definition available. + Details
Name: | bsac_ContingentsLiabilitiesRegonisedLoansLossAllowance
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represent information about foreign letters of credit confirmed contractual obligations. + References No definition available. + Details
Name: | bsac_ForeignLettersOfCreditConfirmedContractualObligations
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represent information about gross contractual obligations toissue loans. + References No definition available. + Details
Name: | bsac_GrossContractualObligationsToIssueLoans
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represent information about guarantees contractual obligations. + References No definition available. + Details
Name: | bsac_GuaranteesContractualObligations
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represent information about letters of credit issued contractual obligations. + References No definition available. + Details
Name: | bsac_LettersOfCreditIssuedContractualObligations
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represent information about other irrevocable credit commitments. + References No definition available. + Details
Name: | bsac_OtherIrrevocableCreditCommitments
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represent information about personal guarantees contractual obligations. + References No definition available. + Details
Name: | bsac_PersonalGuaranteesContractualObligations
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represent information about total contractual obligations to issue loans. + References No definition available. + Details
Name: | bsac_TotalContractualObligationsToIssueLoans
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant