XML 203 R183.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Equity (Details) - Schedule of perpetual bond - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Schedule of perpetual bond [Abstract] |  |
Perpetual bond | $ 598,136 |
Totals | 598,136 |
US$ Bonds | 598,136 |
Total | $ 598,136 |

X
- Definition The amount of debt instruments held by the entity that were issued by a bank. + References No definition available. + Details
Name: | bsac_BankDebtInstrumentsHelds
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | bsac_DebtInstrumentsTotal
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of perpetual bond . + References No definition available. + Details
Name: | bsac_PerpetualBond
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | bsac_ScheduleOfPerpetualBondAbstract
Namespace Prefix: | bsac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of US Bonds. + References No definition available. + Details
Name: | bsac_USBonds
Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration