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Intangible Assets (Details) - Schedule of Changes in the Value of Intangible Assets - Software development [Member] - CLP ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets (Details) - Schedule of Changes in the Value of Intangible Assets [Line Items]
Gross, beginning balance	$ 351,309	$ 294,745
Gross, ending balance	378,800	351,309
Accumulated amortization, beginning balance	(243,520)	(199,334)
Accumulated amortization, ending balance	(281,249)	(243,520)
Acquisitions	45,067	54,899
Disposals and impairment	(5,415)	(145)
Other	(12,161)	1,810
Year’s amortisation	(53,393)	(42,376)
Disposals and impairment	5,415
Impairment	(1,912)
Other changes	$ 12,161	$ (1,810)

X

- Definition

The amount of intangible assets accumulated amortization gross balance.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
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Balance Type:	debit
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X

- Definition

Amount of accumulated amortization impairment.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
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X

- Definition

Accumulated amortization ncrease (decrease) through other changes of intangible assets and goodwill.

+ References

No definition available.

+ Details

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X

- Definition

Accumulated amortization, beginning balance.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Disposals and impairment.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
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Balance Type:	credit
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X

- Definition

Accumulated amortisation.

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
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X

- Definition

Intangible assets gross balance.

+ 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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Data Type:	xbrli:stringItemType
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X

- Definition

The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_i&doctype=Standard
-URIDate 2023-03-23

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Balance Type:	debit
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X

- Definition

The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_vi&doctype=Standard
-URIDate 2023-03-23

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X

- Definition

The increase (decrease) in intangible assets and goodwill resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause viii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_viii&doctype=Standard
-URIDate 2023-03-23

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