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Risk Management (Details) - Schedule of Liquidity Coverage Ratio	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Schedule of Liquidity Coverage Ratio [Abstract]
Liquidity Coverage Ratio	212.00%	175.00%

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- Definition

The percentage of liquidity coverage ratio is the requirement whereby banks must hold an amount of high-quality liquid assets that's enough to fund cash outflows for 30 days.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration