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Cash and cash equivalents (Details 3) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Amount $ 179,357,487 $ 101,077,015 $ 196,319,058
Scotiabank Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BanChile Corredores de Bolsa S.A.
Date of placement     12-20-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 3,552,994
Monthly interest rate (%)     0.23%
Scotiabank Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BanChile Corredores de Bolsa S.A.
Date of placement     12-21-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 1,196,505
Monthly interest rate (%)     0.23%
Scotiabank Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BanChile Corredores de Bolsa S.A.
Date of placement     12-21-2018
Due date     01-16-2019
Currency     CLP
Amount     $ 283,475
Monthly interest rate (%)     0.23%
Scotiabank Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BanChile Corredores de Bolsa S.A.
Date of placement     12-28-2018
Due date     01-15-2019
Currency     CLP
Amount     $ 3,500,840
Monthly interest rate (%)     0.24%
Scotiabank Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BanChile Corredores de Bolsa S.A.
Date of placement     12-28-2018
Due date     01-15-2019
Currency     CLP
Amount     $ 1,500,360
Monthly interest rate (%)     0.24%
Scotiabank Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-26-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 4,829,042
Monthly interest rate (%)     0.24%
Scotiabank Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-24-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 199,653
Monthly interest rate (%)     0.24%
Scotiabank Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-17-2018
Due date     01-16-2019
Currency     CLP
Amount     $ 1,474,627
Monthly interest rate (%)     0.25%
Scotia bank Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 3,822,988
Monthly interest rate (%)     0.26%
Scotia bank Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-27-2018
Due date     01-15-2019
Currency     CLP
Amount     $ 9,453,276
Monthly interest rate (%)     0.26%
Banco BICE - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement   12-27-2019 12-21-2018
Due date   01-02-2020 01-10-2019
Currency   CLP CLP
Amount   $ 734,448 $ 1,997,067
Monthly interest rate (%)   0.18% 0.23%
Banco Security - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-27-2019 12-21-2018
Due date   01-02-2020 01-10-2019
Currency   CLP CLP
Amount   $ 658,478 $ 709,418
Monthly interest rate (%)   0.21% 0.23%
Banco Security - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-23-2019 12-21-2018
Due date   01-06-2020 01-10-2019
Currency   CLP CLP
Amount   $ 300,168 $ 184,213
Monthly interest rate (%)   0.21% 0.23%
Banco Security - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-30-2019 12-21-2018
Due date   01-16-2020 01-16-2019
Currency   CLP CLP
Amount   $ 1,000,060 $ 91,813
Monthly interest rate (%)   0.18% 0.23%
Banco Security - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement   12-26-2019 12-14-2018
Due date   01-03-2020 01-02-2019
Currency   CLP CLP
Amount   $ 2,950,955 $ 5,690,513
Monthly interest rate (%)   0.21% 0.24%
Banco Security - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-20-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 500,440
Monthly interest rate (%)     0.24%
Banco Security - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-26-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 4,881,954
Monthly interest rate (%)     0.24%
Banco Security - Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-13-2018
Due date     01-16-2019
Currency     CLP
Amount     $ 1,969,680
Monthly interest rate (%)     0.25%
Banco de Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-27-2019 12-21-2018
Due date   01-03-2020 01-10-2019
Currency   CLP CLP
Amount   $ 12,003,360 $ 296,155
Monthly interest rate (%)   0.21% 0.23%
Banco de Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BanChile Corredores de Bolsa S.A.
Date of placement   12-26-2019 12-26-2018
Due date   01-03-2020 01-10-2019
Currency   CLP CLP
Amount   $ 1,211,714 $ 5,001,235
Monthly interest rate (%)   0.21% 0.24%
Banco de Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement   12-26-2019 12-13-2018
Due date   01-03-2020 01-14-2019
Currency   CLP CLP
Amount   $ 814,100 $ 4,105,904
Monthly interest rate (%)   0.21% 0.24%
Banco de Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-26-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 2,634,725
Monthly interest rate (%)     0.24%
Banco de Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-27-2018
Due date     01-15-2019
Currency     CLP
Amount     $ 3,279,009
Monthly interest rate (%)     0.25%
Banco de Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-27-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 600,200
Monthly interest rate (%)     0.25%
Banco de Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BanChile Corredores de Bolsa S.A.
Date of placement   12-26-2019 12-26-2018
Due date   01-03-2020 01-15-2019
Currency   CLP CLP
Amount   $ 1,500,525 $ 10,004,000
Monthly interest rate (%)   0.21% 0.24%
Banco De Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 6,881,358
Monthly interest rate (%)     0.26%
Banco De Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-24-2018
Due date     01-09-2019
Currency     CLP
Amount     $ 900,546
Monthly interest rate (%)     0.26%
Banco de Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-14-2018
Due date     01-02-2019
Currency     CLP
Amount     $ 1,094,729
Monthly interest rate (%)     0.24%
Banco de Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-13-2018
Due date     01-02-2019
Currency     CLP
Amount     $ 3,550,258
Monthly interest rate (%)     0.25%
Banco de Credito e Inversiones - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement   12-30-2019 12-24-2018
Due date   01-09-2020 01-10-2019
Currency   CLP CLP
Amount   $ 100,005 $ 950,991
Monthly interest rate (%)   0.16% 0.24%
Banco de Credito e Inversiones - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement   12-27-2019 12-14-2018
Due date   01-02-2020 01-02-2019
Currency   CLP CLP
Amount   $ 2,776,880 $ 1,911,598
Monthly interest rate (%)   0.18% 0.24%
Banco de Credito e Inversiones - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa  
Date of placement   12-26-2019 12-26-2018
Due date   01-03-2020 01-30-2019
Currency   CLP CLP
Amount   $ 4,001,333 $ 8,848,606
Monthly interest rate (%)   0.20% 0.24%
Banco de Credito e Inversiones - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement   12-26-2019 12-27-2018
Due date   01-03-2020 01-15-2019
Currency   CLP CLP
Amount   $ 6,002,000 $ 3,001,000
Monthly interest rate (%)   0.20% 0.25%
Banco de Credito e Inversiones - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BBVA Corredores de Bolsa Ltda.
Date of placement   12-23-2019 12-13-2018
Due date   01-06-2020 01-16-2019
Currency   CLP CLP
Amount   $ 1,200,672 $ 233,620
Monthly interest rate (%)   0.21% 0.25%
Banco De Credito e Inversiones - Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BBVA Corredores de Bolsa Ltda.
Date of placement   12-26-2019 12-17-2018
Due date   01-03-2020 01-16-2019
Currency   CLP CLP
Amount   $ 500,167 $ 1,550,072
Monthly interest rate (%)   0.20% 0.25%
Banco De Credito e Inversiones - Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-17-2018
Due date     01-02-2019
Currency     CLP
Amount     $ 4,911,284
Monthly interest rate (%)     0.25%
Banco De Credito e Inversiones - Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-24-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 4,802,350
Monthly interest rate (%)     0.26%
Banco De Credito e Inversiones - Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-24-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 2,501,517
Monthly interest rate (%)     0.26%
Banco De Credito e Inversiones - Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-27-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 1,190,413
Monthly interest rate (%)     0.26%
Banco De Credito e Inversiones - Chile Eleven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-27-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 3,801,316
Monthly interest rate (%)     0.26%
Banco Itau Corpbanca - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BanChile Corredores de Bolsa S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement   12-27-2019 12-26-2018
Due date   01-02-2020 01-30-2019
Currency   CLP CLP
Amount   $ 489,632 $ 1,650,525
Monthly interest rate (%)   0.18% 0.24%
Banco Itau Corpbanca - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BBVA Corredores de Bolsa Ltda.
Date of placement   12-27-2019 11-30-2018
Due date   01-03-2020 01-04-2019
Currency   CLP CLP
Amount   $ 4,001,120 $ 2,216,658
Monthly interest rate (%)   0.21% 0.26%
Banco Itau Corpbanca - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BBVA Corredores de Bolsa Ltda.
Date of placement   12-27-2019 12-17-2018
Due date   01-06-2020 01-02-2019
Currency   CLP CLP
Amount   $ 639,513 $ 7,880,787
Monthly interest rate (%)   0.21% 0.25%
Banco Itau Corpbanca - Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BBVA Corredores de Bolsa Ltda.
Date of placement   12-26-2019 12-17-2018
Due date   01-03-2020 01-16-2019
Currency   CLP CLP
Amount   $ 5,109,314 $ 1,230,260
Monthly interest rate (%)   0.21% 0.25%
Banco Itau Corpbanca - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 1,963,352
Monthly interest rate (%)     0.26%
Banco Itau Corpbanca - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 185,620
Monthly interest rate (%)     0.26%
Banco Itau Corpbanca - Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-27-2018
Due date     01-09-2019
Currency     CLP
Amount     $ 2,000,692
Monthly interest rate (%)     0.26%
Banco del Estado de Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-27-2019 12-17-2018
Due date   01-03-2020 01-04-2019
Currency   CLP CLP
Amount   $ 5,001,400 $ 6,807,616
Monthly interest rate (%)   0.21% 0.24%
Banco del Estado de Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-30-2019 12-26-2018
Due date   01-09-2020 01-10-2019
Currency   CLP CLP
Amount   $ 200,012 $ 1,100,440
Monthly interest rate (%)   0.18% 0.24%
Banco del Estado de Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BanChile Corredores de Bolsa S.A.
Date of placement   12-30-2019 12-26-2018
Due date   01-24-2020 01-10-2019
Currency   CLP CLP
Amount   $ 331,012 $ 490,196
Monthly interest rate (%)   0.18% 0.24%
Banco del Estado de Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement   12-30-2019 12-14-2018
Due date   01-09-2020 01-02-2019
Currency   CLP CLP
Amount   $ 300,018 $ 7,009,520
Monthly interest rate (%)   0.18% 0.24%
Banco del Estado de Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-26-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 6,702,680
Monthly interest rate (%)     0.24%
Banco del Estado de Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BancoEstado S.A. Corredores de Bolsa
Date of placement     12-27-2018
Due date     01-15-2019
Currency     CLP
Amount     $ 472,241
Monthly interest rate (%)     0.25%
Banco del Estado de Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     11-30-2018
Due date     01-04-2019
Currency     CLP
Amount     $ 3,899,730
Monthly interest rate (%)     0.26%
Banco del Estado de Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-13-2018
Due date     01-02-2019
Currency     CLP
Amount     $ 2,859,342
Monthly interest rate (%)     0.25%
Banco del Estado de Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-13-2018
Due date     01-30-2019
Currency     CLP
Amount     $ 270,405
Monthly interest rate (%)     0.25%
Banco Santander - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement   12-30-2019 12-14-2018
Due date   01-16-2020 01-30-2019
Currency   CLP CLP
Amount   $ 5,959,517 $ 250,340
Monthly interest rate (%)   0.18% 0.24%
Banco del Estado de Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 7,941,664
Monthly interest rate (%)     0.26%
Banco Santander - Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A. BancoEstado S.A. Corredores de Bolsa
Date of placement   12-26-2019 12-26-2018
Due date   01-03-2020 01-30-2019
Currency   CLP CLP
Amount   $ 5,705,073 $ 6,560,550
Monthly interest rate (%)   0.21% 0.24%
Banco del Estado de Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 1,815    
Monthly interest rate (%) 0.02%    
Banco BICE - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A.  
Date of placement   12-26-2019  
Due date   01-03-2020  
Currency   CLP  
Amount   $ 2,289,511  
Monthly interest rate (%)   0.21%  
Banco Consorcio - Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa  
Date of placement   12-23-2019  
Due date   01-06-2020  
Currency   CLP  
Amount   $ 300,168  
Monthly interest rate (%)   0.21%  
Banco De Credito e Inversiones - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BanChile Corredores de Bolsa S.A. BanChile Corredores de Bolsa S.A.
Date of placement   12-30-2019 12-26-2018
Due date   01-02-2020 01-10-2019
Currency   CLP CLP
Amount   $ 1,124,056 $ 300,885
Monthly interest rate (%)   0.22% 0.24%
Banco Security - Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 1,967,453
Monthly interest rate (%)     0.26%
Banco Santander - Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-24-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 2,602,140
Monthly interest rate (%)     0.26%
Banco Security - Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 895,503
Monthly interest rate (%)     0.26%
Banco Santander - Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-19-2018
Due date     01-10-2019
Currency     CLP
Amount     $ 4,451,265
Monthly interest rate (%)     0.26%
Banco Central de Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BanChile Corredores de Bolsa S.A.  
Date of placement   12-30-2019  
Due date   01-02-2020  
Currency   CLP  
Amount   $ 6,176,480  
Monthly interest rate (%)   0.22%  
Banco Central de Chile One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 12,198,902    
Monthly interest rate (%) 0.01%    
Banco Central de Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 799,928    
Monthly interest rate (%) 0.01%    
Banco Santander - Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement   12-26-2019 12-14-2018
Due date   01-03-2020 01-02-2019
Currency   CLP CLP
Amount   $ 9,403,133 $ 415,536
Monthly interest rate (%)   0.20% 0.24%
Scotiabank Sudamericano Chile [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa  
Date of placement   12-27-2019  
Due date   01-02-2020  
Currency   CLP  
Amount   $ 1,192,040  
Monthly interest rate (%)   0.21%  
Scotiabank Sudamericano Chile one [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa  
Date of placement   12-27-2019  
Due date   01-09-2020  
Currency   CLP  
Amount   $ 1,200,336  
Monthly interest rate (%)   0.21%  
Scotiabank Sudamericano Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa  
Date of placement   12-30-2019  
Due date   01-16-2020  
Currency   CLP  
Amount   $ 3,864,985  
Monthly interest rate (%)   0.18%  
Scotiabank Sudamericano Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A.  
Date of placement   12-27-2019  
Due date   01-06-2020  
Currency   CLP  
Amount   $ 8,363,007  
Monthly interest rate (%)   0.21%  
Scotiabank Sudamericano Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   Scotia Corredora de Bolsa Chile S.A.  
Date of placement   12-26-2019  
Due date   01-03-2020  
Currency   CLP  
Amount   $ 2,926,683  
Monthly interest rate (%)   0.21%  
Banco Consorcio [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa BancoEstado S.A. Corredores de Bolsa
Date of placement   12-30-2019 12-26-2018
Due date   01-24-2020 01-30-2019
Currency   CLP CLP
Amount   $ 369,030 $ 3,427,727
Monthly interest rate (%)   0.18% 0.24%
Banco Consorcio Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity   BancoEstado S.A. Corredores de Bolsa  
Date of placement   12-30-2019  
Due date   01-16-2020  
Currency   CLP  
Amount   $ 376,110  
Monthly interest rate (%)   0.18%  
Banco Santander - Chile Three one [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity     BBVA Corredores de Bolsa Ltda.
Date of placement     12-17-2018
Due date     01-02-2019
Currency     CLP
Amount     $ 2,876,187
Monthly interest rate (%)     0.25%
Banco Central De Chile Three [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 3,499,685    
Monthly interest rate (%) 0.01%    
Banco Central De Chile Four [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 1,799,838    
Monthly interest rate (%) 0.01%    
Banco Central De Chile Five [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 849,924    
Monthly interest rate (%) 0.01%    
Banco Central De Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 5,000,000    
Monthly interest rate (%) 0.01%    
Banco De Chile Eleven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 301,140    
Monthly interest rate (%) 0.01%    
Banco De Chile Twelve [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 75    
Monthly interest rate (%) 0.01%    
Banco De Chile Thirteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 327    
Monthly interest rate (%) 0.01%    
Banco De Chile Fourteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 168    
Monthly interest rate (%) 0.01%    
Banco De Chile Fifteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BanChile Corredores de Bolsa S.A.    
Date of placement 12-30-2020    
Due date 01-04-2021    
Currency CLP    
Amount $ 79    
Monthly interest rate (%) 0.01%    
Banco Central De Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 598,213    
Monthly interest rate (%) 0.02%    
Banco Central De Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 1,497,373    
Monthly interest rate (%) 0.03%    
Banco Central De Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-21-2021    
Currency CLP    
Amount $ 1,546,802    
Monthly interest rate (%) 0.03%    
Banco Central De Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 897,320    
Monthly interest rate (%) 0.02%    
Banco Central De Chile Eleven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 997,022    
Monthly interest rate (%) 0.02%    
Banco Central De Chile Twelve [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-28-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 25,177,686    
Monthly interest rate (%) 0.03%    
Banco Central De Chile Thirteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 2,553,682    
Monthly interest rate (%) 0.03%    
Banco Central De Chile Fourteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 897,320    
Monthly interest rate (%) 0.02%    
Banco Central De Chile Fifteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 1,989,442    
Monthly interest rate (%) 0.03%    
Banco Central De Chile Sixteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 498,511    
Monthly interest rate (%) 0.02%    
Banco Central De Chile Seventeen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 598,291    
Monthly interest rate (%) 0.03%    
Banco De Chile Sixteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 2,642    
Monthly interest rate (%) 0.03%    
Banco De Chile Seventeen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 246,346    
Monthly interest rate (%) 0.03%    
Banco De Chile Eighteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 10,578    
Monthly interest rate (%) 0.03%    
Banco De Chile Nineteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 667,953    
Monthly interest rate (%) 0.03%    
Banco De Chile Twenty [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 1,715    
Monthly interest rate (%) 0.03%    
Banco Credito E Inversiones Chile Twelve [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-21-2021    
Currency CLP    
Amount $ 453,218    
Monthly interest rate (%) 0.03%    
Banco Credito E Inversiones Chile Thirteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-28-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 1,500,045    
Monthly interest rate (%) 0.03%    
Banco Credito E Inversiones Chile Fourteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-28-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 4,823,214    
Monthly interest rate (%) 0.03%    
Banco Credito E Inversiones Chile Fifteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 2,000,020    
Monthly interest rate (%) 0.03%    
Banco Santander Chile Six [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 7,832,132    
Monthly interest rate (%) 0.03%    
Banco Santander Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-21-2021    
Currency CLP    
Amount $ 1,200,012    
Monthly interest rate (%) 0.03%    
Banco Del Estado De Chile Eleven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-17-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 900,084    
Monthly interest rate (%) 0.02%    
Banco Del Estado De Chile Twelve [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 2,722    
Monthly interest rate (%) 0.02%    
Banco Del Estado De Chile Thirteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 3,025    
Monthly interest rate (%) 0.02%    
Banco Del Estado De Chile Fourteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 2,722    
Monthly interest rate (%) 0.02%    
Banco Del Estado De Chile Fifteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-24-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 1,512    
Monthly interest rate (%) 0.02%    
Banco Del Estado De Chile Sixteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 8,400,084    
Monthly interest rate (%) 0.03%    
Banco Del Estado De Chile Seventeen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-17-2020    
Due date 01-05-2021    
Currency CLP    
Amount $ 5,000,000    
Monthly interest rate (%) 0.02%    
Scotia Bank Chile Ten [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BancoEstado S.A. Corredores de Bolsa    
Date of placement 12-30-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 1,000,010    
Monthly interest rate (%) 0.03%    
Basa Paraguay [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity BASA - Paraguay    
Date of placement 10-19-2020    
Due date 01-18-2021    
Currency USD    
Amount $ 4,239    
Monthly interest rate (%) 0.02%    
Banco Consorcio Chile Two [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 11,525,797    
Monthly interest rate (%) 0.03%    
Banco De Chile Twenty One [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 4,793,536    
Monthly interest rate (%) 0.03%    
Banco Credito E Inversiones Chile Sixteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 20,639,190    
Monthly interest rate (%) 0.03%    
Banco Credito E Inversiones Chile Seventeen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 5,031,227    
Monthly interest rate (%) 0.03%    
Banco Itau Corpobanca Chile Seven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 37,761    
Monthly interest rate (%) 0.03%    
Banco Itau Corpobanca Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 12,085,681    
Monthly interest rate (%) 0.03%    
Banco Santander Chile Eight [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 3,530,093    
Monthly interest rate (%) 0.03%    
Banco Security Chile Nine [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 1,995,032    
Monthly interest rate (%) 0.03%    
Scotia Bank Chile Eleven [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 9,363,062    
Monthly interest rate (%) 0.03%    
Scotia Bank Chile Twelve [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-07-2021    
Currency CLP    
Amount $ 14,000,280    
Monthly interest rate (%) 0.03%    
Scotia Bank Chile Thirteen [Member]      
Disclosure of Cash and Cash Equivalents [Line Items]      
Financial entity Scotia Corredora de Bolsa Chile S.A.    
Date of placement 12-29-2020    
Due date 01-14-2021    
Currency CLP    
Amount $ 600,012    
Monthly interest rate (%) 0.03%