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Risk Management (Details) - Schedule of net stable funding ratio	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Net Stable Funding Ratio Abstract
NSFR	116.00%	111.00%

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- Definition

The percentage of net stable funding ratio is a liquidity standard requiring banks to hold enough stable funding to cover the duration of their long-term assets.

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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