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NON-CONTROLLING INTEREST (Details) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Equity | $ 46,163 |  | $ 41,883 |  | $ 24,341 |
Income | 4,360 |  | 12,448 |  | 2,365 |
Other comprehensive income |  |  |  |  |  |
Debt instruments at FVOCI | (86) |  |  |  |  |
Available for sale investments |  |  | 470 |  | 1,054 |
Deferred tax | 2 |  | (134) |  | (251) |
Total other comprehensive income | (84) |  | 336 |  | 803 |
Comprehensive income | $ 4,276 |  | $ 12,784 |  | $ 3,168 |
Santander Agente de Valores Limitada [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling | 0.97% |  | 0.97% |  | 0.97% |
Equity | $ 488 |  | $ 389 |  | $ 492 |
Income | 99 |  | 132 |  | 116 |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income |  |  |  |  |  |
Comprehensive income | $ 99 |  | $ 132 |  | $ 116 |
Santander S.A. Sociedad Securitizadora [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling | 0.36% |  | 0.36% |  | 0.36% |
Equity | $ 2 |  | $ 1 |  | $ 2 |
Income |  |  |  |  |  |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income |  |  |  |  |  |
Comprehensive income |  |  |  |  |  |
Santander Corredores de Bolsa Limitada [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling | 49.00% |  | 49.00% | [1] | 49.41% |
Equity | $ 21,673 |  | $ 21,000 | [1] | $ 19,966 |
Income | 755 |  | 702 | [1] | 1,130 |
Other comprehensive income |  |  |  |  |  |
Debt instruments at FVOCI | (84) |  |  |  |  |
Available for sale investments |  |  | 470 | [1] | 1,054 |
Deferred tax | 2 |  | (134) | [1] | (251) |
Total other comprehensive income | (82) |  | 336 | [1] | 803 |
Comprehensive income | $ 673 |  | $ 1,038 | [1] | $ 1,933 |
Santander Corredora de Seguros Limitada [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling | 0.24% |  | 0.24% |  | 0.25% |
Equity | $ 172 |  | $ 167 |  | $ 164 |
Income | 4 |  | 4 |  | 7 |
Other comprehensive income |  |  |  |  |  |
Debt instruments at FVOCI | (2) |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income | (2) |  |  |  |  |
Comprehensive income | 2 |  | 4 |  | 7 |
Subsidiaries [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Equity | 22,335 |  | 21,557 |  | 20,624 |
Income | 858 |  | 838 |  | 1,253 |
Other comprehensive income |  |  |  |  |  |
Debt instruments at FVOCI | (86) |  |  |  |  |
Available for sale investments |  |  | 470 |  | 1,054 |
Deferred tax | 2 |  | (134) |  | (251) |
Total other comprehensive income | (84) |  | 336 |  | 803 |
Comprehensive income | $ 774 |  | $ 1,174 |  | $ 2,056 |
Bansa Santander S.A. [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling | 100.00% | [1] | 100.00% |  | 100.00% |
Equity | $ 20,051 | [1] | $ 17,401 |  | $ 6,533 |
Income | 2,650 | [1] | 10,869 |  | 529 |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  | [1] |  |  |  |
Deferred tax |  | [1] |  |  |  |
Total other comprehensive income |  | [1] |  |  |  |
Comprehensive income | $ 2,650 | [1] | $ 10,869 |  | $ 529 |
Santander Gestion de Recaudacion y Cobranzas Limitada [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling | 100.00% |  | 100.00% |  | 100.00% | [2]
Equity | $ 3,777 |  | $ 2,925 |  | $ 2,184 | [2]
Income | 852 |  | 741 |  | 583 | [2]
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  | [2]
Deferred tax |  |  |  |  |  | [2]
Total other comprehensive income |  |  |  |  |  | [2]
Comprehensive income | 852 |  | 741 |  | 583 | [2]
Total Entities Controlled Through Other Considerations [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Equity | 23,828 |  | 20,326 |  | 8,717 |
Income | 3,502 |  | 11,610 |  | 1,112 |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income |  |  |  |  |  |
Comprehensive income | $ 3,502 |  | $ 11,610 |  | $ 1,112 |
Multinegocios S.A [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling |  |  |  |  | 100.00% |
Multinegocios S.A. [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling |  |  |  |  |  |
Income |  |  |  |  |  |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income |  |  |  |  |  |
Comprehensive income |  |  |  |  |  |
Servicios Administrativos Y Financieros Limitada [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling |  |  |  |  | 100.00% |
Income |  |  |  |  |  |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income |  |  |  |  |  |
Comprehensive income |  |  |  |  |  |
Servicios Administrativos y Financieros Limitada. [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Equity |  |  |  |  |  |
Multiservicios De Negocios Limitada [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling |  |  |  |  | 100.00% |
Income |  |  |  |  |  |
Other comprehensive income |  |  |  |  |  |
Available for sale investments |  |  |  |  |  |
Deferred tax |  |  |  |  |  |
Total other comprehensive income |  |  |  |  |  |
Comprehensive income |  |  |  |  |  |
Multiservicios de Negocios Limitada. [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Equity |  |  |  |  |  |
[1] | In September 2017, Bansa Santander S.A. celebrated a legal cession of rights,which generated an income of Ch$20,663 million before tax (Ch$15,197 million net of taxes).
[2] | Ex Santander S.A. Corredores de Bolsa, See Note1.

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