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Risk Management (Details) - Schedule of Main Sources of Financing with Third Parties - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Schedule of Main Sources of Financing with Third Parties [Abstract] |  |
Deposits and other demand obligations | $ 13,537,826 | $ 14,086,226
Time deposits | 16,137,942 | 12,978,790
Bank obligations | 10,366,499 | 8,864,765
Debt instruments issued and regulatory capital | 8,001,045 | 9,490,009
Total | $ 48,043,312 | $ 45,419,790

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- Definition The amount of bank obligations. + References No definition available. + Details
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- Definition The amount of debt instruments issued that are included in the insurer's regulatory capital. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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- Definition Amount of time deposits. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of balances in customers' demand deposits held by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition The cash outflow for interest paid, classified as financing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 31 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_31&doctype=Standard -URIDate 2023-03-23 + Details
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