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Investments in Other Companies - Associates Statement of financial position (Details) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Disclosure of associates [line items] |  |  |
Total Assets | $ 41,013,874 | $ 35,601,430 |
Total Liabilities | 37,108,113 | 31,927,714 | $ 29,016,089
Equity | 3,905,760 | 3,673,715 |
Minority interest | 1 | 1 |
Total Liabilities and Equity | 41,013,874 | 35,601,430 |
Centro de Compensacion Automatizado S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 5,087 | 3,088 |
Non-current assets | 3,463 | 3,985 |
Total Assets | 8,550 | 1,894 |
Current liabilities | 1,947 | 1,321 |
Non-current liabilities | 139 | 160 |
Total Liabilities | 2,086 | 1,481 |
Equity | 6,464 | 5,592 |
Minority interest |  |  |
Total Liabilities and Equity | 8,550 | 7,073 |
Sociedad Operadora de la Camara de Compensacion de Pagos de Alto Valor S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 6,019 | 5,871 |
Non-current assets | 1,353 | 857 |
Total Assets | 7,372 | 944 |
Current liabilities | 769 | 622 |
Non-current liabilities | 313 |  |
Total Liabilities | 1,082 | 622 |
Equity | 6,290 | 6,106 |
Minority interest |  |  |
Total Liabilities and Equity | 7,372 | 6,728 |
Sociedad Operadora de Tarjetas de Crdito Nexus S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 9,586 | 12,918 |
Non-current assets | 21,561 | 22,221 |
Total Assets | 31,147 | 4,557 |
Current liabilities | 7,951 | 14,179 |
Non-current liabilities | 5,521 | 4,155 |
Total Liabilities | 13,472 | 18,334 |
Equity | 17,675 | 16,805 |
Minority interest |  |  |
Total Liabilities and Equity | 31,147 | 35,139 |
Sociedad Interbancaria de Depositos de Valores S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 113 | 153 |
Non-current assets | 4,961 | 4,239 |
Total Assets | 5,074 | 1,129 |
Current liabilities | 263 | 231 |
Non-current liabilities |  |  |
Total Liabilities | 263 | 231 |
Equity | 4,811 | 4,161 |
Minority interest |  |  |
Total Liabilities and Equity | 5,074 | 4,392 |
Redbanc S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 7,047 | 6,084 |
Non-current assets | 16,366 | 14,741 |
Total Assets | 23,413 | 3,219 |
Current liabilities | 7,688 | 9,907 |
Non-current liabilities | 6,504 | 2,562 |
Total Liabilities | 14,192 | 12,469 |
Equity | 9,221 | 8,356 |
Minority interest |  |  |
Total Liabilities and Equity | 23,413 | 20,825 |
Transbank S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 1,118,388 | 818,587 |
Non-current assets | 99,060 | 85,971 |
Total Assets | 1,217,448 | 18,468 |
Current liabilities | 1,130,800 | 833,788 |
Non-current liabilities | 3,981 | 1,412 |
Total Liabilities | 1,134,781 | 835,200 |
Equity | 82,667 | 69,358 |
Minority interest |  |  |
Total Liabilities and Equity | 1,217,448 | 904,558 |
Administrador Financiero del Transantiago S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 54,120 | 55,406 |
Non-current assets | 592 | 416 |
Total Assets | 54,712 | 3,680 |
Current liabilities | 34,234 | 36,676 |
Non-current liabilities | 1,304 | 1,164 |
Total Liabilities | 35,538 | 37,840 |
Equity | 19,174 | 17,978 |
Minority interest |  |  |
Total Liabilities and Equity | 54,712 | 55,818 |
Servicios de Infraestructura de Mercado OTC S.A. [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 21,585 | 18,842 |
Non-current assets | 8,216 | 37,840 |
Total Assets | 29,801 | 1,474 |
Current liabilities | 16,789 | 10,111 |
Non-current liabilities | 533 | 3,201 |
Total Liabilities | 17,322 | 13,312 |
Equity | 12,470 | 11,952 |
Minority interest | 9 | 9 |
Total Liabilities and Equity | 29,801 | 25,273 |
Associates [Member] |  |  |
Disclosure of associates [line items] |  |  |
Current assets | 1,221,945 | 920,949 |
Non-current assets | 155,572 | 138,857 |
Total Assets | 1,377,517 | 35,365 |
Current liabilities | 1,200,441 | 906,835 |
Non-current liabilities | 18,295 | 12,654 |
Total Liabilities | 1,218,736 | 919,489 |
Equity | 158,772 | 140,308 |
Minority interest | 9 | 9 |
Total Liabilities and Equity | $ 1,377,517 | $ 1,059,806 |

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