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Risk Management (Details) - Schedule of liquidity coverage ratio	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Liquidity Coverage Ratio Abstract
LCR	175.00%	149.00%

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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

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

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- References

No definition available.

+ Details

Name:	bsac_ScheduleOfLiquidityCoverageRatioAbstract
Namespace Prefix:	bsac_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration