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Risk Management (Details) - Schedule of Market Risk Exposure (Parentheticals)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Schedule of Market Risk Exposure [Abstract]
Percentage of RWA	10.00%	10.00%
Percentage of (net income from interest and readjustments + interest rates sensitive commissions)	35.00%	35.00%
Percentage of Regulatory capital	35.00%	35.00%

X

- Definition

Percentage of resident welfare association.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of regulatory capital.

+ References

No definition available.

+ Details

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

X

- Definition

Percentage of (net income from interest and readjustments + interest rates sensitive commissions).

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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Namespace Prefix:	bsac_
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Balance Type:	na
Period Type:	duration