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v3.22.4

Right of Use Assets and Obligation for Lease Contracts (Details) - Schedule of accumulated amortization - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Right of Use Assets and Obligation for Lease Contracts (Details) - Schedule of accumulated amortization [Line Items] |  |
Balances as of beginning | $ (74,567) | $ (49,576)
Balances as of ending | (97,808) | (74,567)
Amortisation for the period | (31,319) | (28,899)
Sales and disposals during the period | 8,078 | 3,908
Transfers |  |
Others |  |
Land and building [Member] |  |
Right of Use Assets and Obligation for Lease Contracts (Details) - Schedule of accumulated amortization [Line Items] |  |
Balances as of beginning | (74,567) | (49,576)
Balances as of ending | (97,808) | (74,567)
Amortisation for the period | (31,319) | (28,899)
Sales and disposals during the period | 8,078 | 3,908
Transfers |  |
Others |  |
Other [Member] |  |
Right of Use Assets and Obligation for Lease Contracts (Details) - Schedule of accumulated amortization [Line Items] |  |
Balances as of beginning |  |
Balances as of ending |  |
Amortisation for the period |  |
Sales and disposals during the period |  |
Transfers |  |
Others |  |

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- Definition Accumulated amortization is the cumulative amount of all amortization expense that has been charged against an intangible asset. + References No definition available. + Details
Name: | bsac_AccumulatedAmortizations
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition The amount of other accumulated amortization. + References No definition available. + Details
Name: | bsac_OthersAccumulatedAmortization
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition The amount of sales and disposals. + References No definition available. + Details
Name: | bsac_SalesAndDisposals
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_LandAndBuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=bsac_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |