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Fixed Assets and Right of Use Assets and Lease Liability (Details Textual) - CLP ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fixed Assets And Right Of Use Assets And Lease Liability
Due to impairment	$ 1,013	$ 39

X

- References

No definition available.

+ Details

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

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- Definition

The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2019-01-01
-Paragraph 130
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_130_b&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2019-01-01
-Paragraph 130
-Subparagraph d
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_130_d_ii&doctype=Standard
-URIDate 2019-03-27

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Balance Type:	debit
Period Type:	duration