Allowance For ECL

No definition available.

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

- Definition

Basis Spread On Variable Rate

+ References

No definition available.

+ Details

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Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Basis Spread On Variable Rate Change In Nominal Rates

+ References

No definition available.

+ Details

Name:	bsac_BasisSpreadOnVariableRateChangeInNominalRates
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Basis Spread On Variable Rate Curve For Real Estate

+ References

No definition available.

+ Details

Name:	bsac_BasisSpreadOnVariableRateCurveForRealEstate
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Basis Spread On Variable Rate For Exchange Rate

+ References

No definition available.

+ Details

Name:	bsac_BasisSpreadOnVariableRateForExchangeRate
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Capital To Risk-Weighted Assets Ratio

+ References

No definition available.

+ Details

Name:	bsac_CapitalToRiskWeightedAssetsRatio
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Capital To Risk-Weighted Assets Ratio, Difference Between Requirement

+ References

No definition available.

+ Details

Name:	bsac_CapitalToRiskWeightedAssetsRatioDifferenceBetweenRequirement
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Credit loss allowance.

+ References

No definition available.

+ Details

Name:	bsac_CreditLossAllowance
Namespace Prefix:	bsac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of demand deposits percentage.

+ References

No definition available.

+ Details

Name:	bsac_DemandDepositsPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Derivative Instruments Amount

+ References

No definition available.

+ Details

Name:	bsac_DerivativeInstrumentsAmount
Namespace Prefix:	bsac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Derivative Instruments Percentage

+ References

No definition available.

+ Details

Name:	bsac_DerivativeInstrumentsPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Gradually implemented percentage.

+ References

No definition available.

+ Details

Name:	bsac_GraduallyImplementedPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of Inflation risk.

+ References

No definition available.

+ Details

Name:	bsac_InflationsRiskPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Lieu Of Payment

+ References

No definition available.

+ Details

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

- Definition

lieu of payment allowance.

+ References

No definition available.

+ Details

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

- Definition

lieu of payment gross.

+ References

No definition available.

+ Details

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

- Definition

The long-term interest rate risk percentage.

+ References

No definition available.

+ Details

Name:	bsac_LongtermInterestRateRiskPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maintain reserves percentage.

+ References

No definition available.

+ Details

Name:	bsac_MaintainReservesPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Marked Risk, Returns Calculation, Period

+ References

No definition available.

+ Details

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

- Definition

Market Risk, Number Of Data Points Since Last Calculation

+ References

No definition available.

+ Details

Name:	bsac_MarketRiskNumberOfDataPointsSinceLastCalculation
Namespace Prefix:	bsac_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Market Risk, VaR, Confidence Level, Percentage

+ References

No definition available.

+ Details

Name:	bsac_MarketRiskVaRConfidenceLevelPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of directors.

+ References

No definition available.

+ Details

Name:	bsac_NumberOfDirectors
Namespace Prefix:	bsac_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Most Recent Data Points

+ References

No definition available.

+ Details

Name:	bsac_NumberOfMostRecentDataPoints
Namespace Prefix:	bsac_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Probabilities Percentage.

+ References

No definition available.

+ Details

Name:	bsac_ProbabilitiesPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Provision equivalent percentage.

+ References

No definition available.

+ Details

Name:	bsac_ProvisionEquivalentPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Regulatory Adjustments And Exclusions Percentage

+ References

No definition available.

+ Details

Name:	bsac_RegulatoryAdjustmentsAndExclusionsPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Regulatory capital percentage.

+ References

No definition available.

+ Details

Name:	bsac_RegulatoryCapitalPercentage
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Residual term of operation.

+ References

No definition available.

+ Details

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

- Definition

Risk Management (Details) [Line Items]

+ References

No definition available.

+ Details

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

- Definition

The short-term interest rate risk percentage.

+ References

No definition available.

+ Details

Name:	bsac_ShorttermInterestRateRisk
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of investment percentage.

+ References

No definition available.

+ Details

Name:	bsac_TotalInvestmentPercentage1
Namespace Prefix:	bsac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Value at Risk Estimated Measuring Period

+ References

No definition available.

+ Details

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

- Definition

The aggregate amount of cash flows that are required to maintain the entity's current ability to execute operating activities (for example, measured by units of output per day).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
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+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of impairment loss recognised in profit or loss. [Refer: Impairment loss; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2024-01-01
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase (decrease) in financial assets. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 7
-IssueDate 2024-01-01
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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Risk Management (Details) - Narrative $ in Millions, $ in Millions		1 Months Ended		12 Months Ended
	Dec. 01, 2025	Dec. 31, 2025 CLP ($)	Dec. 31, 2023 CLP ($)	Dec. 31, 2025 CLP ($) data_point director	Dec. 31, 2025 USD ($) data_point director	Dec. 31, 2024 CLP ($)	Dec. 31, 2024 USD ($)
Risk Management [Line Items]
Number of directors \| director				11	11
Level of confidence percentage				99.00%	99.00%
Returns calculated time window period				2 years	2 years
Number of data points \| data_point				520	520
Number of most recent data points \| data_point				30	30
Value at risk estimated measuring period				100 days	100 days
Basis spread on variable rate				1.00%	1.00%
Basis spread on variable rate curve for real estate				0.57%	0.57%
Basis spread on variable rate change in nominal rates				1.00%	1.00%
Basis spread on variable rate for exchange rate				1.00%	1.00%
Inflation risk percentage				30.00%	30.00%
Long-term interest rate risk percentage				35.00%	35.00%
Short-term interest rate risk percentage				55.00%	55.00%
Total investment percentage				99.00%	99.00%
Increase (decrease) in financial assets				$ (68,877)		$ (162,997)
Impairment loss recognised in profit or loss			$ 863
Portfolios percentage				100.00%	100.00%
Allowance for ECL – discounted cash flow methodology		$ 151,682		$ 151,682		165,935
Probabilities percentage				100.00%	100.00%
Lieu of payment (in Pesos)		42,463		$ 42,463		35,622
Lieu of payment, gross (in Pesos)		42,489		42,489		36,804
Lieu of payment, allowance (in Pesos)		$ 26		$ 26		$ 1,182
Derivative instruments amount (in Dollars)					$ 1,720
Derivative instruments percentage				3.00%	3.00%
Gradually implemented percentage						100.00%	100.00%
Maintain reserves percentage				40.00%	40.00%
Demand deposits percentage				20.00%	20.00%
Regulatory capital percentage				100.00%	100.00%
Maintain technical amount (in Dollars)					$ 0		$ 0
Capital to risk-weighted assets ratio		16.89%		16.89%
Capital to risk weighted assets ratio, percent above requirement		4.26%		4.26%
Regulatory adjustments and exclusions percentage	65.00%	100.00%
Credit loss allowance (in Pesos)				$ 119,776
Impairment on debt financial instruments
Risk Management [Line Items]
Increase (decrease) in financial assets						$ 353
Stage 1
Risk Management [Line Items]
Residual term of operation				2 years	2 years
Stage 2
Risk Management [Line Items]
Residual term of operation				2 years 6 months	2 years 6 months