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Transactions With Related Parties (Details) - Schedule of Composition of the Bank’s Key Personnel - position	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Composition of the Bank’s Key Personnel [Line Items]
Total key personnel	136	133	135
Director
Schedule of Composition of the Bank’s Key Personnel [Line Items]
Total key personnel	11	11	11
Manager
Schedule of Composition of the Bank’s Key Personnel [Line Items]
Total key personnel	125	122	124

X

- Definition

Represent information about number of executives.

+ References

No definition available.

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X

- Definition

Schedule of Composition of the Bank’s Key Personnel [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
Data Type:	xbrli:stringItemType
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X

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=bsac_Director1Member
Namespace Prefix:
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X

- Details

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