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v3.19.3.a.u2

Expected Credit Losses Allowance (Details) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of financial assets [line items] |  |
Commercial loans | $ (140,245) | $ (142,783)
Mortgage loans | (14,412) | 14,121
Consumer loans | (169,483) | (189,251)
Contingent loans | 1,008 | 8
Loans and account receivable at FVOCI | 5 | 431
Debt at FVOCI | (184) | 66
Total | (323,311) | (317,408)
Stage 1 [Member] | Individual [Member] |  |
Disclosure of financial assets [line items] |  |
Commercial loans | (3,002) | 79
Mortgage loans |  |
Consumer loans |  |
Contingent loans | 45 | (90)
Loans and account receivable at FVOCI | 5 | 363
Debt at FVOCI |  |
Total | (2,952) | 352
Stage 1 [Member] | Collective [Member] |  |
Disclosure of financial assets [line items] |  |
Commercial loans | (4,930) | 5,652
Mortgage loans | (1,177) | 5,583
Consumer loans | (8,875) | 1,861
Contingent loans | 589 | 1,214
Loans and account receivable at FVOCI |  |
Debt at FVOCI | (184) | 66
Total | (14,577) | 14,376
Stage 2 [Member] | Individual [Member] |  |
Disclosure of financial assets [line items] |  |
Commercial loans | (10,469) | (2,891)
Mortgage loans |  |
Consumer loans |  |
Contingent loans | 10 | 11
Loans and account receivable at FVOCI |  | 68
Debt at FVOCI |  |
Total | (10,459) | 3,752
Stage 2 [Member] | Collective [Member] |  |
Disclosure of financial assets [line items] |  |
Commercial loans | (8,686) | (1,533)
Mortgage loans | (4,998) | 5,161
Consumer loans | (15,280) | 192
Contingent loans | 24 | (68)
Loans and account receivable at FVOCI |  |
Debt at FVOCI |  |
Total | (28,940) | 3,752
Stage 3 [Member] | Individual [Member] |  |
Disclosure of financial assets [line items] |  |
Commercial loans | (79,501) | (96,131)
Mortgage loans |  |
Consumer loans |  |
Contingent loans | 152 | (225)
Loans and account receivable at FVOCI |  |
Debt at FVOCI |  |
Total | (79,349) | (96,356)
Stage 3 [Member] | Collective [Member] |  |
Disclosure of financial assets [line items] |  |
Commercial loans | (33,657) | (47,959)
Mortgage loans | (8,237) | 3,377
Consumer loans | (145,328) | (191,304)
Contingent loans | 188 | (834)
Loans and account receivable at FVOCI |  |
Debt at FVOCI |  |
Total | $ (187,034) | $ (236,720)

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Namespace Prefix: | bsac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Commercial loans. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

X
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Period Type: | duration

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Period Type: | duration

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Namespace Prefix: | bsac_
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Period Type: | duration

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Period Type: | duration

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