XML 212 R117.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Derivative Financial Instruments and Hedge Accounting (Details Textual) - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Derivative Financial Instruments and Hedge Accounting (Textual) |  |
Bank recorded inefficiencies | $ 2,912 | $ 1,187

X
- Definition It represents value of bank inefficiencies recorded as of balance sheet date. + References No definition available. + Details
Name: | bsac_BankInefficienciesRecorded
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Derivative Financial Instruments and Hedge Accounting (Textual). + References No definition available. + Details
Name: | bsac_DerivativeFinancialInstrumentsAndHedgeAccountingTextualAbstract
Namespace Prefix: | bsac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration