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Cash and cash equivalents (Details 3) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Cash and Cash Equivalents [Line Items]      
Amount [1] $ 101,077,015 $ 196,319,058 $ 102,695,758
Scotiabank Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1]   12-20-2018 12-12-2017
Due date [1]   01-10-2019 01-05-2018
Currency [1]   CLP CLP
Amount [1]   $ 3,552,994 $ 369,413
Monthly interest rate (%) [1]   0.23% 0.24%
Scotiabank Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1]   12-21-2018 12-14-2017
Due date [1]   01-10-2019 01-05-2018
Currency [1]   CLP CLP
Amount [1]   $ 1,196,505 $ 6,006,912
Monthly interest rate (%) [1]   0.23% 0.24%
Scotiabank Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-21-2018 12-28-2017
Due date [1]   01-16-2019 01-05-2018
Currency [1]   CLP CLP
Amount [1]   $ 283,475 $ 5,001,250
Monthly interest rate (%) [1]   0.23% 0.25%
Scotiabank Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-28-2018 12-29-2017
Due date [1]   01-15-2019 01-10-2018
Currency [1]   CLP CLP
Amount [1]   $ 3,500,840 $ 3,238,217
Monthly interest rate (%) [1]   0.24% 0.25%
Scotiabank Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-28-2018 12-29-2017
Due date [1]   01-15-2019 01-10-2018
Currency [1]   CLP CLP
Amount [1]   $ 1,500,360 $ 340,057
Monthly interest rate (%) [1]   0.24% 0.25%
Scotiabank Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa  
Date of placement [1]   12-26-2018  
Due date [1]   01-30-2019  
Currency [1]   CLP  
Amount [1]   $ 4,829,042  
Monthly interest rate (%) [1]   0.24%  
Scotiabank Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-24-2018 12-22-2017
Due date [1]   01-10-2019 01-10-2018
Currency [1]   CLP CLP
Amount [1]   $ 199,653 $ 2,628,752
Monthly interest rate (%) [1]   0.24% 0.25%
Scotiabank Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda. BBVA Corredores de Bolsa Ltda.
Date of placement [1]   12-17-2018 12-28-2017
Due date [1]   01-16-2019 01-30-2018
Currency [1]   CLP CLP
Amount [1]   $ 1,474,627 $ 1,455,543
Monthly interest rate (%) [1]   0.25% 0.23%
Scotia bank Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 3,822,988  
Monthly interest rate (%) [1]   0.26%  
Scotia bank Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-27-2018  
Due date [1]   01-15-2019  
Currency [1]   CLP  
Amount [1]   $ 9,453,276  
Monthly interest rate (%) [1]   0.26%  
Banco BICE - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-27-2019 12-21-2018 12-28-2017
Due date [1] 01-02-2020 01-10-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 734,448 $ 1,997,067 $ 2,000,500
Monthly interest rate (%) [1] 0.18% 0.23% 0.25%
Banco Security - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-27-2019 12-21-2018 12-14-2017
Due date [1] 01-02-2020 01-10-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 658,478 $ 709,418 $ 3,796,772
Monthly interest rate (%) [1] 0.21% 0.23% 0.24%
Banco Security - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-23-2019 12-21-2018 12-12-2017
Due date [1] 01-06-2020 01-10-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 300,168 $ 184,213 $ 2,935,603
Monthly interest rate (%) [1] 0.21% 0.23% 0.24%
Banco Security - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-30-2019 12-21-2018 12-28-2017
Due date [1] 01-16-2020 01-16-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 1,000,060 $ 91,813 $ 1,000,250
Monthly interest rate (%) [1] 0.18% 0.23% 0.25%
Banco Security - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-14-2018 12-29-2017
Due date [1] 01-03-2020 01-02-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 2,950,955 $ 5,690,513 $ 1,938,656
Monthly interest rate (%) [1] 0.21% 0.24% 0.25%
Banco Security - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa  
Date of placement [1]   12-20-2018  
Due date [1]   01-30-2019  
Currency [1]   CLP  
Amount [1]   $ 500,440  
Monthly interest rate (%) [1]   0.24%  
Banco Security - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa Valores Security S.A. Corredores de Bolsa
Date of placement [1]   12-26-2018 12-27-2017
Due date [1]   01-30-2019 01-10-2018
Currency [1]   CLP CLP
Amount [1]   $ 4,881,954 $ 280,086
Monthly interest rate (%) [1]   0.24% 0.23%
Banco Security - Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-13-2018  
Due date [1]   01-16-2019  
Currency [1]   CLP  
Amount [1]   $ 1,969,680  
Monthly interest rate (%) [1]   0.25%  
Banco de Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-27-2019 12-21-2018 12-22-2017
Due date [1] 01-03-2020 01-10-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 12,003,360 $ 296,155 $ 3,672,751
Monthly interest rate (%) [1] 0.21% 0.23% 0.25%
Banco de Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-26-2018 12-28-2017
Due date [1] 01-03-2020 01-10-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 1,211,714 $ 5,001,235 $ 2,750,688
Monthly interest rate (%) [1] 0.21% 0.24% 0.25%
Banco de Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-13-2018 12-28-2017
Due date [1] 01-03-2020 01-14-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 814,100 $ 4,105,904 $ 4,251,063
Monthly interest rate (%) [1] 0.21% 0.24% 0.25%
Banco de Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-26-2018 12-28-2017
Due date [1]   01-30-2019 01-15-2018
Currency [1]   CLP CLP
Amount [1]   $ 2,634,725 $ 3,800,950
Monthly interest rate (%) [1]   0.24% 0.25%
Banco de Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa  
Date of placement [1]   12-27-2018  
Due date [1]   01-15-2019  
Currency [1]   CLP  
Amount [1]   $ 3,279,009  
Monthly interest rate (%) [1]   0.25%  
Banco de Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa  
Date of placement [1]   12-27-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 600,200  
Monthly interest rate (%) [1]   0.25%  
Banco de Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BanChile Corredores de Bolsa S.A.  
Date of placement [1] 12-26-2019 12-26-2018  
Due date [1] 01-03-2020 01-15-2019  
Currency [1] CLP CLP  
Amount [1] $ 1,500,525 $ 10,004,000  
Monthly interest rate (%) [1] 0.21% 0.24%  
Banco De Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 6,881,358  
Monthly interest rate (%) [1]   0.26%  
Banco De Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-24-2018  
Due date [1]   01-09-2019  
Currency [1]   CLP  
Amount [1]   $ 900,546  
Monthly interest rate (%) [1]   0.26%  
Banco de Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-14-2018 12-28-2017
Due date [1]   01-02-2019 01-30-2018
Currency [1]   CLP CLP
Amount [1]   $ 1,094,729 $ 1,250,313
Monthly interest rate (%) [1]   0.24% 0.25%
Banco de Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-13-2018  
Due date [1]   01-02-2019  
Currency [1]   CLP  
Amount [1]   $ 3,550,258  
Monthly interest rate (%) [1]   0.25%  
Banco de Credito e Inversiones - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-30-2019 12-24-2018 12-22-2017
Due date [1] 01-09-2020 01-10-2019 01-03-2018
Currency [1] CLP CLP CLP
Amount [1] $ 100,005 $ 950,991 $ 5,003,750
Monthly interest rate (%) [1] 0.16% 0.24% 0.25%
Banco de Credito e Inversiones - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-27-2019 12-14-2018 12-26-2017
Due date [1] 01-02-2020 01-02-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 2,776,880 $ 1,911,598 $ 2,910,394
Monthly interest rate (%) [1] 0.18% 0.24% 0.24%
Banco de Credito e Inversiones - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-26-2018 12-28-2017
Due date [1] 01-03-2020 01-30-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 4,001,333 $ 8,848,606 $ 4,001,000
Monthly interest rate (%) [1] 0.20% 0.24% 0.25%
Banco de Credito e Inversiones - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-27-2018 12-29-2017
Due date [1] 01-03-2020 01-15-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 6,002,000 $ 3,001,000 $ 2,524,410
Monthly interest rate (%) [1] 0.20% 0.25% 0.25%
Banco de Credito e Inversiones - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BBVA Corredores de Bolsa Ltda.  
Date of placement [1] 12-23-2019 12-13-2018  
Due date [1] 01-06-2020 01-16-2019  
Currency [1] CLP CLP  
Amount [1] $ 1,200,672 $ 233,620  
Monthly interest rate (%) [1] 0.21% 0.25%  
Banco De Credito e Inversiones - Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BBVA Corredores de Bolsa Ltda.  
Date of placement [1] 12-26-2019 12-17-2018  
Due date [1] 01-03-2020 01-16-2019  
Currency [1] CLP CLP  
Amount [1] $ 500,167 $ 1,550,072  
Monthly interest rate (%) [1] 0.20% 0.25%  
Banco De Credito e Inversiones - Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-17-2018  
Due date [1]   01-02-2019  
Currency [1]   CLP  
Amount [1]   $ 4,911,284  
Monthly interest rate (%) [1]   0.25%  
Banco De Credito e Inversiones - Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-24-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 4,802,350  
Monthly interest rate (%) [1]   0.26%  
Banco De Credito e Inversiones - Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-24-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 2,501,517  
Monthly interest rate (%) [1]   0.26%  
Banco De Credito e Inversiones - Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-27-2018  
Due date [1]   01-30-2019  
Currency [1]   CLP  
Amount [1]   $ 1,190,413  
Monthly interest rate (%) [1]   0.26%  
Banco De Credito e Inversiones - Chile Eleven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-27-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 3,801,316  
Monthly interest rate (%) [1]   0.26%  
Banco Itau Corpbanca - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-27-2019 12-26-2018 12-14-2017
Due date [1] 01-02-2020 01-30-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 489,632 $ 1,650,525 $ 970,704
Monthly interest rate (%) [1] 0.18% 0.24% 0.24%
Banco Itau Corpbanca - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BBVA Corredores de Bolsa Ltda. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-27-2019 11-30-2018 12-26-2017
Due date [1] 01-03-2020 01-04-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 4,001,120 $ 2,216,658 $ 1,591,406
Monthly interest rate (%) [1] 0.21% 0.26% 0.24%
Banco Itau Corpbanca - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BBVA Corredores de Bolsa Ltda. BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-27-2019 12-17-2018 12-29-2017
Due date [1] 01-06-2020 01-02-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 639,513 $ 7,880,787 $ 2,000,333
Monthly interest rate (%) [1] 0.21% 0.25% 0.25%
Banco Itau Corpbanca - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BBVA Corredores de Bolsa Ltda.  
Date of placement [1] 12-26-2019 12-17-2018  
Due date [1] 01-03-2020 01-16-2019  
Currency [1] CLP CLP  
Amount [1] $ 5,109,314 $ 1,230,260  
Monthly interest rate (%) [1] 0.21% 0.25%  
Banco Itau Corpbanca - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda. BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-19-2018 12-28-2017
Due date [1]   01-10-2019 01-10-2018
Currency [1]   CLP CLP
Amount [1]   $ 1,963,352 $ 3,833,082
Monthly interest rate (%) [1]   0.26% 0.25%
Banco Itau Corpbanca - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 185,620  
Monthly interest rate (%) [1]   0.26%  
Banco Itau Corpbanca - Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-27-2018  
Due date [1]   01-09-2019  
Currency [1]   CLP  
Amount [1]   $ 2,000,692  
Monthly interest rate (%) [1]   0.26%  
Banco del Estado de Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-27-2019 12-17-2018 12-14-2017
Due date [1] 01-03-2020 01-04-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 5,001,400 $ 6,807,616 $ 144,116
Monthly interest rate (%) [1] 0.21% 0.24% 0.24%
Banco del Estado de Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-30-2019 12-26-2018 12-22-2017
Due date [1] 01-09-2020 01-10-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 200,012 $ 1,100,440 $ 2,631,974
Monthly interest rate (%) [1] 0.18% 0.24% 0.25%
Banco del Estado de Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-30-2019 12-26-2018 12-28-2017
Due date [1] 01-24-2020 01-10-2019 01-04-2018
Currency [1] CLP CLP CLP
Amount [1] $ 331,012 $ 490,196 $ 80,020
Monthly interest rate (%) [1] 0.18% 0.24% 0.25%
Banco del Estado de Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-30-2019 12-14-2018 12-28-2017
Due date [1] 01-09-2020 01-02-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 300,018 $ 7,009,520 $ 3,000,750
Monthly interest rate (%) [1] 0.18% 0.24% 0.25%
Banco del Estado de Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-26-2018 12-28-2017
Due date [1]   01-30-2019 01-04-2018
Currency [1]   CLP CLP
Amount [1]   $ 6,702,680 $ 950,238
Monthly interest rate (%) [1]   0.24% 0.25%
Banco del Estado de Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   12-27-2018 12-28-2017
Due date [1]   01-15-2019 01-04-2018
Currency [1]   CLP CLP
Amount [1]   $ 472,241 $ 225,056
Monthly interest rate (%) [1]   0.25% 0.25%
Banco del Estado de Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda. BancoEstado S.A. Corredores de Bolsa
Date of placement [1]   11-30-2018 12-28-2017
Due date [1]   01-04-2019 01-30-2018
Currency [1]   CLP CLP
Amount [1]   $ 3,899,730 $ 8,102,025
Monthly interest rate (%) [1]   0.26% 0.25%
Banco del Estado de Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-13-2018  
Due date [1]   01-02-2019  
Currency [1]   CLP  
Amount [1]   $ 2,859,342  
Monthly interest rate (%) [1]   0.25%  
Banco del Estado de Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-13-2018  
Due date [1]   01-30-2019  
Currency [1]   CLP  
Amount [1]   $ 270,405  
Monthly interest rate (%) [1]   0.25%  
Banco Santander - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-30-2019 12-14-2018 12-22-2017
Due date [1] 01-16-2020 01-30-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 5,959,517 $ 250,340 $ 1,000,750
Monthly interest rate (%) [1] 0.18% 0.24% 0.25%
Banco del Estado de Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 7,941,664  
Monthly interest rate (%) [1]   0.26%  
Banco Santander - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A. BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-26-2018 12-28-2017
Due date [1] 01-03-2020 01-30-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 5,705,073 $ 6,560,550 $ 8,475,346
Monthly interest rate (%) [1] 0.21% 0.24% 0.25%
Banco Internacional - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]     BancoEstado S.A. Corredores de Bolsa
Date of placement [1]     12-28-2017
Due date [1]     01-10-2018
Currency [1]     CLP
Amount [1]     $ 944,884
Monthly interest rate (%) [1]     0.25%
Banco BICE - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A.    
Date of placement [1] 12-26-2019    
Due date [1] 01-03-2020    
Currency [1] CLP    
Amount [1] $ 2,289,511    
Monthly interest rate (%) [1] 0.21%    
Banco Consorcio - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa    
Date of placement [1] 12-23-2019    
Due date [1] 01-06-2020    
Currency [1] CLP    
Amount [1] $ 300,168    
Monthly interest rate (%) [1] 0.21%    
Banco De Credito e Inversiones - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement [1] 12-30-2019 12-26-2018 12-14-2017
Due date [1] 01-02-2020 01-10-2019 01-05-2018
Currency [1] CLP CLP CLP
Amount [1] $ 1,124,056 $ 300,885 $ 196,591
Monthly interest rate (%) [1] 0.22% 0.24% 0.24%
Banco Security - Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 1,967,453  
Monthly interest rate (%) [1]   0.26%  
Banco Security - Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 895,503  
Monthly interest rate (%) [1]   0.26%  
Banco Santander - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-24-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 2,602,140  
Monthly interest rate (%) [1]   0.26%  
Banco Santander - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-19-2018  
Due date [1]   01-10-2019  
Currency [1]   CLP  
Amount [1]   $ 4,451,265  
Monthly interest rate (%) [1]   0.26%  
Banco Central de Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BanChile Corredores de Bolsa S.A.    
Date of placement [1] 12-30-2019    
Due date [1] 01-02-2020    
Currency [1] CLP    
Amount [1] $ 6,176,480    
Monthly interest rate (%) [1] 0.22%    
Banco Santander - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement [1] 12-26-2019 12-14-2018 12-22-2017
Due date [1] 01-03-2020 01-02-2019 01-10-2018
Currency [1] CLP CLP CLP
Amount [1] $ 9,403,133 $ 415,536 $ 1,974,698
Monthly interest rate (%) [1] 0.20% 0.24% 0.25%
Scotiabank Azul - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]     BancoEstado S.A. Corredores de Bolsa
Date of placement [1]     12-28-2017
Due date [1]     01-05-2018
Currency [1]     CLP
Amount [1]     $ 1,000,250
Monthly interest rate (%) [1]     0.25%
Scotiabank Azul - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]     BBVA Corredores de Bolsa Ltda.
Date of placement [1]     12-27-2017
Due date [1]     01-08-2018
Currency [1]     CLP
Amount [1]     $ 1,700,567
Monthly interest rate (%) [1]     0.25%
Scotiabank Azul - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]     BBVA Corredores de Bolsa Ltda.
Date of placement [1]     12-18-2017
Due date [1]     01-18-2018
Currency [1]     CLP
Amount [1]     $ 290,289
Monthly interest rate (%) [1]     0.23%
Scotiabank Azul - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]     BBVA Corredores de Bolsa Ltda.
Date of placement [1]     12-28-2017
Due date [1]     01-30-2018
Currency [1]     CLP
Amount [1]     $ 2,425,349
Monthly interest rate (%) [1]     0.23%
Scotiabank Sudamericano Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa    
Date of placement [1] 12-27-2019    
Due date [1] 01-02-2020    
Currency [1] CLP    
Amount [1] $ 1,192,040    
Monthly interest rate (%) [1] 0.21%    
Scotiabank Sudamericano Chile one [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa    
Date of placement [1] 12-27-2019    
Due date [1] 01-09-2020    
Currency [1] CLP    
Amount [1] $ 1,200,336    
Monthly interest rate (%) [1] 0.21%    
Scotiabank Sudamericano Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa    
Date of placement [1] 12-30-2019    
Due date [1] 01-16-2020    
Currency [1] CLP    
Amount [1] $ 3,864,985    
Monthly interest rate (%) [1] 0.18%    
Scotiabank Sudamericano Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A.    
Date of placement [1] 12-27-2019    
Due date [1] 01-06-2020    
Currency [1] CLP    
Amount [1] $ 8,363,007    
Monthly interest rate (%) [1] 0.21%    
Scotiabank Sudamericano Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] Scotia Corredora de Bolsa Chile S.A.    
Date of placement [1] 12-26-2019    
Due date [1] 01-03-2020    
Currency [1] CLP    
Amount [1] $ 2,926,683    
Monthly interest rate (%) [1] 0.21%    
Banco Consorcio [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa  
Date of placement [1] 12-30-2019 12-26-2018  
Due date [1] 01-24-2020 01-30-2019  
Currency [1] CLP CLP  
Amount [1] $ 369,030 $ 3,427,727  
Monthly interest rate (%) [1] 0.18% 0.24%  
Banco Consorcio Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1] BancoEstado S.A. Corredores de Bolsa    
Date of placement [1] 12-30-2019    
Due date [1] 01-16-2020    
Currency [1] CLP    
Amount [1] $ 376,110    
Monthly interest rate (%) [1] 0.18%    
Banco Santander - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity [1]   BBVA Corredores de Bolsa Ltda.  
Date of placement [1]   12-17-2018  
Due date [1]   01-02-2019  
Currency [1]   CLP  
Amount [1]   $ 2,876,187  
Monthly interest rate (%) [1]   0.25%  
[1] All financial instruments acquired under resale agreements, correspond to time deposits and are subject to a fixed interest rate.