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Regulatory Capital Financial Instruments (Details) - Schedule of Subordinated Bonds Per Currency - CLP ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of detailed information about financial instruments [abstract]
Subordinated bonds denominated in USD	$ 199,701	$ 175,233
Subordinated bonds denominated in UF	1,710,996	1,638,705
Total subordinated bonds	$ 1,910,697	$ 1,813,938	$ 1,733,869

X

- Definition

The amount of liabilities that are subordinate to bond denominate.

+ References

No definition available.

+ Details

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X

- Definition

The amount of subordinated bonds denominated in UF.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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X

- Definition

The amount of liabilities that are subordinate to other liabilities with respect to claims.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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