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Subsequent Events (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2019
CLP ($)
Repurchase Bond [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 375,000
Date Jan. 02, 2020
Repurchase Bond [Member] | CHF [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 50,000,000
Date Jan. 13, 2020
Repurchase Bond 1 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 131,000
Date Jan. 14, 2020
Repurchase Bond 1 [Member] | CHF [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 9,820,000,000
Date Jan. 14, 2020
Repurchase Bond 2 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 171,000
Date Jan. 21, 2020
Repurchase Bond 2 [Member] | CHF  
Statement Line Items [Line Items]  
Repurchases bond $ 400,000,000
Date Jan. 15, 2020
Repurchase Bond Three [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 181,000
Date Jan. 21, 2020
Repurchase Bond Three [Member] | CHF  
Statement Line Items [Line Items]  
Repurchases bond $ 330,000,000
Date Jan. 21, 2020
Repurchase Bond 4 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 2,000
Date Jan. 24, 2020
Repurchase Bond 4 [Member] | CHF  
Statement Line Items [Line Items]  
Repurchases bond $ 11,430,000,000
Date Jan. 22, 2020
Repurchase Bond 5 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 15,000
Date Feb. 17, 2020
Repurchase Bond 6 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 2,000
Date Feb. 17, 2020
Repurchase Bond 7 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 50,000
Date Feb. 18, 2020
Repurchase Bond 8 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 4,000
Date Feb. 18, 2020
Repurchase Bond 9 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 350,000
Date Feb. 20, 2020
Repurchase Bond 10 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 115,000
Date Feb. 20, 2020
Repurchase Bond 11 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 57,000
Date Feb. 21, 2020
Repurchase Bond 12 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 24,000
Date Feb. 21, 2020
Repurchase Bond 13 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 10,000
Date Feb. 24, 2020
Repurchase Bond 14 [Member] | Unidad De Fomento [Member]  
Statement Line Items [Line Items]  
Repurchases bond $ 25,000
Date Feb. 24, 2020