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ISSUED DEBT INSTRUMENTS AND OTHER FINANCIAL LIABILITIES (Details 5) $ in Millions, $ in Millions, in Millions | 12 Months Ended
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Dec. 31, 2018 CLP ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CLF ( ) | Dec. 31, 2017 CLP ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CLF ( )
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount | $ | $ 241,467,084 |  |  | $ 177,224,139 |  |
Senior Bonds [Member] | USD [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount | $ |  | $ 3,090,000 |  |  | $ 6,900,000 |
Issuance date | Jul. 06, 2018 | Jul. 06, 2018 | Jul. 06, 2018 | Jun. 03, 2017 | Jun. 03, 2017 | Jun. 03, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 1,000,000
Issuance date |  |  |  | Dec. 05, 2017 | Dec. 05, 2017 | Dec. 05, 2017
Senior Bonds [Member] | Chile, Pesos |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount | $ | $ 12,890,000,000 |  |  | $ 10,990,000,000 |  |
Issuance date | Apr. 01, 2018 | Apr. 01, 2018 | Apr. 01, 2018 | Dec. 12, 2017 | Dec. 12, 2017 | Dec. 12, 2017
Senior Bonds [Member] | USD [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount | $ |  | $ 250,000,000 |  |  |  |
Issuance date | Nov. 12, 2018 | Nov. 12, 2018 | Nov. 12, 2018 |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 690,000
Issuance date |  |  |  | May 16, 2017 | May 16, 2017 | May 16, 2017
Senior Bonds [Member] | Chile, Pesos |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount | $ | $ 4,600,000,000 |  |  |  |  |
Issuance date | Apr. 01, 2018 | Apr. 01, 2018 | Apr. 01, 2018 |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 24,000 |  |  | 15,000
Issuance date | Jan. 22, 2018 | Jan. 22, 2018 | Jan. 22, 2018 | May 17, 2017 | May 17, 2017 | May 17, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 484,000 |  |  | 340,000
Issuance date | May 04, 2018 | May 04, 2018 | May 04, 2018 | Jun. 26, 2017 | Jun. 26, 2017 | Jun. 26, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 184,000 |  |  | 590,000
Issuance date | Jun. 04, 2018 | Jun. 04, 2018 | Jun. 04, 2018 | Jan. 06, 2017 | Jan. 06, 2017 | Jan. 06, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 216,000 |  |  | 300,000
Issuance date | Apr. 23, 2018 | Apr. 23, 2018 | Apr. 23, 2018 | Feb. 06, 2017 | Feb. 06, 2017 | Feb. 06, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 4,000 |  |  | 130,000
Issuance date | Apr. 24, 2018 | Apr. 24, 2018 | Apr. 24, 2018 | May 06, 2017 | May 06, 2017 | May 06, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 262,000 |  |  | 265,000
Issuance date | Apr. 25, 2018 | Apr. 25, 2018 | Apr. 25, 2018 | Jun. 19, 2017 | Jun. 19, 2017 | Jun. 19, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  | 800,000 |  |  | 770,000
Issuance date | Oct. 05, 2018 | Oct. 05, 2018 | Oct. 05, 2018 | Oct. 07, 2017 | Oct. 07, 2017 | Oct. 07, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 10,000
Issuance date |  |  |  | Jul. 21, 2017 | Jul. 21, 2017 | Jul. 21, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 200,000
Issuance date |  |  |  | Aug. 28, 2017 | Aug. 28, 2017 | Aug. 28, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 200,000
Issuance date |  |  |  | Aug. 28, 2017 | Aug. 28, 2017 | Aug. 28, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 2,000
Issuance date |  |  |  | Aug. 29, 2017 | Aug. 29, 2017 | Aug. 29, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 270,000
Issuance date |  |  |  | Aug. 29, 2017 | Aug. 29, 2017 | Aug. 29, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 14,000
Issuance date |  |  |  | Mar. 11, 2017 | Mar. 11, 2017 | Mar. 11, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 400,000
Issuance date |  |  |  | Nov. 29, 2017 | Nov. 29, 2017 | Nov. 29, 2017
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | 20,000
Issuance date |  |  |  | Jun. 12, 2017 | Jun. 12, 2017 | Jun. 12, 2017

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