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v3.19.3.a.u2

Transactions with Related Parties (Details 1) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Key Personnel [Member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Opening balances | $ 33,871 | $ 27,051 |  |
Loans granted | 4,826 | 16,574 | $ 7,777 | $ 8,580
Loans payments | (9,457) | (9,754) | (7,149) | (10,832)
Ending balances | 29,240 | 33,871 | 27,051 |
Other related parties [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Opening balances | 7,899 | 7,826 |  |
Loans granted | 500 | 773 | 1,050 | 6,808
Loans payments | (7,651) | (700) | (324) | (1,674)
Ending balances | 748 | 7,899 | 7,826 |
Associated Companies [Member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Opening balances | 459 | 771 |  |
Loans granted | 167 | 39 | 318 | 203
Loans payments | (251) | (351) | (79) | (236)
Ending balances | 375 | 459 | 771 |
Companies Of The Group [Member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Opening balances | 572,745 | 476,906 |  |
Loans granted | 193,798 | 200,657 | 78,214 | 122,729
Loans payments | (50,646) | (104,818) | (147,366) | $ (193,189)
Ending balances | $ 715,897 | $ 572,745 | $ 476,906 |

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- Definition Amount of loan activity as of balance sheet date. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of loan granted to related party during the period. + References No definition available. + Details
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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of loan payment from related party during the period. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |