XML 201 R174.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Provisions and Contingent Provisions (Details) - Schedule of Provisions for Contingent Loan Risk - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Provisions and Contingent Provisions (Details) - Schedule of Provisions for Contingent Loan Risk [Line Items] |  |
ECL allowance, beginning balance | $ 44,997 | $ 40,357
ECL allowance, ending balance | 21,105 | 44,997
Transfers from stage 1 to stage 2 | 2,914 | 3,134
Transfers from stage 1 to stage 3 | 1,099 | 2,703
Transfers from stage 2 to stage 3 | 5,036 | 4,264
Transfers from stage 2 to stage 1 | (7,395) | (5,635)
Transfers from stage 3 to stage 2 | (2,857) | 836
Transfers from stage 3 to stage 1 | (210) | (77)
Net changes on financial assets | (22,478) | (768)
Write-off |  |
Other adjustments | (1) | 183
Stage 1 [Member] |  |
Provisions and Contingent Provisions (Details) - Schedule of Provisions for Contingent Loan Risk [Line Items] |  |
ECL allowance, beginning balance | 26,316 | 23,029
ECL allowance, ending balance | 10,949 | 26,316
Transfers from stage 1 to stage 2 | (2,645) | (1,585)
Transfers from stage 1 to stage 3 | (142) | (143)
Transfers from stage 2 to stage 3 |  |
Transfers from stage 2 to stage 1 | 1,858 | 1,832
Transfers from stage 3 to stage 2 |  |
Transfers from stage 3 to stage 1 | 3 | 1
Net changes on financial assets | (14,442) | 2,998
Write-off |  |
Other adjustments | 1 | 184
Stage 2 [Member] |  |
Provisions and Contingent Provisions (Details) - Schedule of Provisions for Contingent Loan Risk [Line Items] |  |
ECL allowance, beginning balance | 8,789 | 9,599
ECL allowance, ending balance | 3,420 | 8,789
Transfers from stage 1 to stage 2 | 5,559 | 4,719
Transfers from stage 1 to stage 3 |  |
Transfers from stage 2 to stage 3 | (2,471) | (1,860)
Transfers from stage 2 to stage 1 | (9,253) | (7,467)
Transfers from stage 3 to stage 2 | 2,187 | 3,762
Transfers from stage 3 to stage 1 |  |
Net changes on financial assets | (1,389) | 35
Write-off |  |
Other adjustments | (2) | 1
Stage 3 [Member] |  |
Provisions and Contingent Provisions (Details) - Schedule of Provisions for Contingent Loan Risk [Line Items] |  |
ECL allowance, beginning balance | 9,892 | 7,729
ECL allowance, ending balance | 6,736 | 9,892
Transfers from stage 1 to stage 2 |  |
Transfers from stage 1 to stage 3 | 1,241 | 2,846
Transfers from stage 2 to stage 3 | 7,507 | 6,124
Transfers from stage 2 to stage 1 |  |
Transfers from stage 3 to stage 2 | (5,044) | (2,926)
Transfers from stage 3 to stage 1 | (213) | (78)
Net changes on financial assets | (6,647) | (3,801)
Write-off |  |
Other adjustments |  | $ (2)

X
- Definition Decrease through write-off, expected credit losses allowances. + References No definition available. + Details
Name: | bsac_DecreaseThroughWriteoffExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expected credit loss net change on financiaassets. + References No definition available. + Details
Name: | bsac_ExpectedCreditLossNetChangeOnFinancialAssets
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition ECL allowance, beginning balance. + References No definition available. + Details
Name: | bsac_ExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount refers to foreign exchange adjustments. + References No definition available. + Details
Name: | bsac_GainsLossesOnExchangeDifferencesOnExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments. + References No definition available. + Details
Name: | bsac_IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Transfers to stage 3. + References No definition available. + Details
Name: | bsac_IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments1
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in expected credit losses allowances resulting from transfers. + References No definition available. + Details
Name: | bsac_IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments2
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in expected credit losses allowances resulting from transfers. + References No definition available. + Details
Name: | bsac_IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments3
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in expected credit losses allowances resulting from transfers. + References No definition available. + Details
Name: | bsac_IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments4
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in expected credit losses allowances resulting from transfers. + References No definition available. + Details
Name: | bsac_IncreaseDecreaseThroughTransfersExpectedCreditLossesAllowancesContingentLiabilitiesAndLoanCommitments5
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | bsac_StageAxis=bsac_Stage1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bsac_StageAxis=bsac_Stage2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bsac_StageAxis=bsac_Stage3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |