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Regulatory Capital Financial Instruments (Details) - Schedule of placement of subordinated bonds CLF in Millions	12 Months Ended
	Dec. 31, 2024 CLF
Disclosure of detailed information about financial instruments [abstract]
Placement amount	CLF 3,300,000
Interest rate	3.51%
Plazo de emisión	6 years

X

- Definition

The percentage of the interest.

+ References

No definition available.

+ Details

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X

- Definition

Placement is a process of selling a certain amount of securities to investors.

+ References

No definition available.

+ Details

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

X

- Definition

Plazo de emisión.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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