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ISSUED DEBT INSTRUMENTS AND OTHER FINANCIAL LIABILITIES (Details 4) € in Millions, ¥ in Millions, SFr in Millions, $ in Millions, $ in Millions, $ in Millions, in Millions | 12 Months Ended |  |
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Dec. 31, 2018 CLP ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 JPY (¥) | Dec. 31, 2018 CLF ( ) | Dec. 31, 2018 CHF (SFr) | Dec. 31, 2018 AUD ($) | Dec. 31, 2017 CLP ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CLF ( ) | Dec. 31, 2017 AUD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 JPY (¥) | Dec. 31, 2018 CLF ( ) | Dec. 31, 2018 CHF (SFr) | Dec. 31, 2018 AUD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CLF ( ) | Dec. 31, 2017 AUD ($)
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | $ 241,467,084 |  |  |  |  |  |  | $ 177,224,139 |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T9 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |
Terms Years |  |  |  |  |  |  |  | P7Y | P7Y | P7Y | P7Y |  |  |  |  |  |  |  |  |
Issuance rate (annual) |  |  |  |  |  |  |  | 2.60% |  |  |  |  |  |  |  |  |  | 2.60% | 2.60% | 2.60%
Series approval date |  |  |  |  |  |  |  | Feb. 01, 2016 | Feb. 01, 2016 | Feb. 01, 2016 | Feb. 01, 2016 |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Mar. 01, 2024 | Mar. 01, 2024 | Mar. 01, 2024 | Mar. 01, 2024 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T13 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |
Terms Years |  |  |  |  |  |  |  | P9Y | P9Y | P9Y | P9Y |  |  |  |  |  |  |  |  |
Issuance rate (annual) |  |  |  |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  | 2.75% | 2.75% | 2.75%
Series approval date |  |  |  |  |  |  |  | Feb. 01, 2016 | Feb. 01, 2016 | Feb. 01, 2016 | Feb. 01, 2016 |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Mar. 01, 2026 | Mar. 01, 2026 | Mar. 01, 2026 | Mar. 01, 2026 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23 |  |  |  | 10 |
Series maximum amount | |  |  |  |  | 30 |  |  |  |  | 10 |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T1 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |
Terms Years | P2Y | P2Y | P2Y | P2Y | P2Y | P2Y | P2Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 2.20% |  |  |  |  |  |  |  |  |  |  | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% |  |  |
Series approval date | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 02, 2020 | Jan. 02, 2020 | Jan. 02, 2020 | Jan. 02, 2020 | Jan. 02, 2020 | Jan. 02, 2020 | Jan. 02, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T4 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |
Terms Years | P3Y | P3Y | P3Y | P3Y | P3Y | P3Y | P3Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 2.35% |  |  |  |  |  |  |  |  |  |  | 2.35% | 2.35% | 2.35% | 2.35% | 2.35% | 2.35% |  |  |
Series approval date | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  | 8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 08, 2021 | Jan. 08, 2021 | Jan. 08, 2021 | Jan. 08, 2021 | Jan. 08, 2021 | Jan. 08, 2021 | Jan. 08, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T11 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |
Terms Years | P7Y | P7Y | P7Y | P7Y | P7Y | P7Y | P7Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 2.65% |  |  |  |  |  |  |  |  |  |  | 2.65% | 2.65% | 2.65% | 2.65% | 2.65% | 2.65% |  |  |
Series approval date | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 02, 2025 | Jan. 02, 2025 | Jan. 02, 2025 | Jan. 02, 2025 | Jan. 02, 2025 | Jan. 02, 2025 | Jan. 02, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T12 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |
Terms Years | P7Y | P7Y | P7Y | P7Y | P7Y | P7Y | P7Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 2.70% |  |  |  |  |  |  |  |  |  |  | 2.70% | 2.70% | 2.70% | 2.70% | 2.70% | 2.70% |  |  |
Series approval date | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 08, 2025 | Jan. 08, 2025 | Jan. 08, 2025 | Jan. 08, 2025 | Jan. 08, 2025 | Jan. 08, 2025 | Jan. 08, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Unidad De Fomento (funds code) [Member] | T15 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |
Terms Years | P11Y | P11Y | P11Y | P11Y | P11Y | P11Y | P11Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 3.00% |  |  |  |  |  |  |  |  |  |  | 3.00% | 3.00% | 3.00% | 3.00% | 3.00% | 3.00% |  |  |
Series approval date | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 | Jan. 02, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 08, 2028 | Jan. 08, 2028 | Jan. 08, 2028 | Jan. 08, 2028 | Jan. 08, 2028 | Jan. 08, 2028 | Jan. 08, 2028 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | $ 12,890,000,000 |  |  |  |  |  |  | $ 10,990,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | 225,000 |  |  |  |  |  |  | 160,000 |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | 300,000 |  |  |  |  |  |  | 300,000 |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos | SD [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  | $ 60,000 |  |  |  |  |  |  |  |  |  |  |  |
Terms Years |  |  |  |  |  |  |  | P5Y | P5Y | P5Y | P5Y |  |  |  |  |  |  |  |  |
Issuance rate (annual) |  |  |  |  |  |  |  | 5.50% |  |  |  |  |  |  |  |  |  | 5.50% | 5.50% | 5.50%
Series approval date |  |  |  |  |  |  |  | Jun. 01, 2014 | Jun. 01, 2014 | Jun. 01, 2014 | Jun. 01, 2014 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Dec. 01, 2019 | Dec. 01, 2019 | Dec. 01, 2019 | Dec. 01, 2019 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos | T16 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Terms Years |  |  |  |  |  |  |  | P6Y | P6Y | P6Y | P6Y |  |  |  |  |  |  |  |  |
Issuance rate (annual) |  |  |  |  |  |  |  | 5.20% |  |  |  |  |  |  |  |  |  | 5.20% | 5.20% | 5.20%
Series approval date |  |  |  |  |  |  |  | Feb. 01, 2016 | Feb. 01, 2016 | Feb. 01, 2016 | Feb. 01, 2016 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Jan. 21, 2021 | Jan. 21, 2021 | Jan. 21, 2021 | Jan. 21, 2021 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos | P5 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Terms Years | P4Y | P4Y | P4Y | P4Y | P4Y | P4Y | P4Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 5.30% |  |  |  |  |  |  |  |  |  |  | 5.30% | 5.30% | 5.30% | 5.30% | 5.30% | 5.30% |  |  |
Series approval date | May 03, 2015 | May 03, 2015 | May 03, 2015 | May 03, 2015 | May 03, 2015 | May 03, 2015 | May 03, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | $ 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 03, 2022 | Jan. 03, 2022 | Jan. 03, 2022 | Jan. 03, 2022 | Jan. 03, 2022 | Jan. 03, 2022 | Jan. 03, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos | U4 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Terms Years | P3Y4M24D | P3Y4M24D | P3Y4M24D | P3Y4M24D | P3Y4M24D | P3Y4M24D | P3Y4M24D |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly |  |  |  |  |  |  |  |  |  |  |  |  |
Series approval date | Oct. 01, 2017 | Oct. 01, 2017 | Oct. 01, 2017 | Oct. 01, 2017 | Oct. 01, 2017 | Oct. 01, 2017 | Oct. 01, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Oct. 01, 2022 | Oct. 01, 2022 | Oct. 01, 2022 | Oct. 01, 2022 | Oct. 01, 2022 | Oct. 01, 2022 | Oct. 01, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Chile, Pesos | U3 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Terms Years | P2Y8M12D | P2Y8M12D | P2Y8M12D | P2Y8M12D | P2Y8M12D | P2Y8M12D | P2Y8M12D |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly | ICP + 1.00% yearly |  |  |  |  |  |  |  |  |  |  |  |  |
Series approval date | Nov. 06, 2018 | Nov. 06, 2018 | Nov. 06, 2018 | Nov. 06, 2018 | Nov. 06, 2018 | Nov. 06, 2018 | Nov. 06, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Nov. 06, 2021 | Nov. 06, 2021 | Nov. 06, 2021 | Nov. 06, 2021 | Nov. 06, 2021 | Nov. 06, 2021 | Nov. 06, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  | $ 3,090,000 |  |  |  |  |  | $ 6,900,000 |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  | $ 100 |  |  |  | $ 50 |  |  |  |  |  |  |  |
Terms Years | P10Y | P10Y | P10Y | P10Y | P10Y | P10Y | P10Y | P3Y | P3Y | P3Y | P3Y |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 4.17% |  |  |  |  |  |  |  |  |  |  | 4.17% | 4.17% | 4.17% | 4.17% | 4.17% | 4.17% |  |  |
Description of Issuance rate (annual) |  |  |  |  |  |  |  | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% |  |  |  |  |  |  |  |  |
Series approval date | Oct. 10, 2018 | Oct. 10, 2018 | Oct. 10, 2018 | Oct. 10, 2018 | Oct. 10, 2018 | Oct. 10, 2018 | Oct. 10, 2018 | Jul. 20, 2017 | Jul. 20, 2017 | Jul. 20, 2017 | Jul. 20, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  | $ 50 |  |  |  |  |  | $ 100 |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Oct. 10, 2028 | Oct. 10, 2028 | Oct. 10, 2028 | Oct. 10, 2028 | Oct. 10, 2028 | Oct. 10, 2028 | Oct. 10, 2028 | Jul. 27, 2020 | Jul. 27, 2020 | Jul. 27, 2020 | Jul. 27, 2020 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  | $ 50 |  |  |  | $ 20 |  |  |  |  |  |  |  |
Terms Years | P2Y | P2Y | P2Y | P2Y | P2Y | P2Y | P2Y | P3Y | P3Y | P3Y | P3Y |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) | 0.0369 | 0.0369 | 0.0369 | 0.0369 | 0.0369 | 0.0369 | 0.0369 | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% |  |  |  |  |  |  |  |  |
Series approval date | Nov. 16, 2018 | Nov. 16, 2018 | Nov. 16, 2018 | Nov. 16, 2018 | Nov. 16, 2018 | Nov. 16, 2018 | Nov. 16, 2018 | Jul. 21, 2017 | Jul. 21, 2017 | Jul. 21, 2017 | Jul. 21, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  | $ 20 |  |  |  |  |  | $ 50 |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Nov. 16, 2020 | Nov. 16, 2020 | Nov. 16, 2020 | Nov. 16, 2020 | Nov. 16, 2020 | Nov. 16, 2020 | Nov. 16, 2020 | Jul. 27, 2020 | Jul. 27, 2020 | Jul. 27, 2020 | Jul. 27, 2020 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |
Terms Years |  |  |  |  |  |  |  | P3Y | P3Y | P3Y | P3Y |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) |  |  |  |  |  |  |  | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% |  |  |  |  |  |  |  |  |
Series approval date |  |  |  |  |  |  |  | Jul. 24, 2017 | Jul. 24, 2017 | Jul. 24, 2017 | Jul. 24, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  |  | $ 50 |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Jul. 27, 2020 | Jul. 27, 2020 | Jul. 27, 2020 | Jul. 27, 2020 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |
Terms Years |  |  |  |  |  |  |  | P4Y | P4Y | P4Y | P4Y |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) |  |  |  |  |  |  |  | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% | Libor-USD 3M+0.80% |  |  |  |  |  |  |  |  |
Series approval date |  |  |  |  |  |  |  | Aug. 23, 2017 | Aug. 23, 2017 | Aug. 23, 2017 | Aug. 23, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  |  | $ 10 |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Nov. 23, 2021 | Nov. 23, 2021 | Nov. 23, 2021 | Nov. 23, 2021 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |
Terms Years |  |  |  |  |  |  |  | P4Y | P4Y | P4Y | P4Y |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) |  |  |  |  |  |  |  | Libor-USD 3M+0.83& | Libor-USD 3M+0.83& | Libor-USD 3M+0.83& | Libor-USD 3M+0.83& |  |  |  |  |  |  |  |  |
Series approval date |  |  |  |  |  |  |  | Aug. 23, 2017 | Aug. 23, 2017 | Aug. 23, 2017 | Aug. 23, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  |  | $ 10 |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Nov. 23, 2021 | Nov. 23, 2021 | Nov. 23, 2021 | Nov. 23, 2021 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50 |  |
Terms Years |  |  |  |  |  |  |  | P3Y | P3Y | P3Y | P3Y |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) |  |  |  |  |  |  |  | Libor-USD 3M+0.83% | Libor-USD 3M+0.83% | Libor-USD 3M+0.83% | Libor-USD 3M+0.83% |  |  |  |  |  |  |  |  |
Series approval date |  |  |  |  |  |  |  | Sep. 14, 2017 | Sep. 14, 2017 | Sep. 14, 2017 | Sep. 14, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  |  | $ 50 |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Sep. 15, 2020 | Sep. 15, 2020 | Sep. 15, 2020 | Sep. 15, 2020 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | DN [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 |  |
Terms Years |  |  |  |  |  |  |  | P3Y | P3Y | P3Y | P3Y |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) |  |  |  |  |  |  |  | Libor-USD 3M+0.75% | Libor-USD 3M+0.75% | Libor-USD 3M+0.75% | Libor-USD 3M+0.75% |  |  |  |  |  |  |  |  |
Series approval date |  |  |  |  |  |  |  | Dec. 12, 2017 | Dec. 12, 2017 | Dec. 12, 2017 | Dec. 12, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  |  |  | $ 500 |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Dec. 15, 2020 | Dec. 15, 2020 | Dec. 15, 2020 | Dec. 15, 2020 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | USD [Member] | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  | $ 70 |  |  |  |  |  | $ 770 |  |
Series maximum amount |  | $ 70 |  |  |  |  |  |  | $ 770 |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | AUD | Senior Bonds Related To AUD [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20 |  |  | $ 30
Terms Years | P5Y | P5Y | P5Y | P5Y | P5Y | P5Y | P5Y | P10Y | P10Y | P10Y | P10Y |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 3.56% |  |  |  |  |  |  | 3.96% |  |  |  | 3.56% | 3.56% | 3.56% | 3.56% | 3.56% | 3.56% | 3.96% | 3.96% | 3.96%
Series approval date | Nov. 13, 2018 | Nov. 13, 2018 | Nov. 13, 2018 | Nov. 13, 2018 | Nov. 13, 2018 | Nov. 13, 2018 | Nov. 13, 2018 | May 12, 2017 | May 12, 2017 | May 12, 2017 | May 12, 2017 |  |  |  |  |  |  |  |  |
Series maximum amount |  |  |  |  |  |  | $ 20 |  |  |  | $ 30 |  |  |  |  |  |  |  |  |
Maturity date | Nov. 13, 2023 | Nov. 13, 2023 | Nov. 13, 2023 | Nov. 13, 2023 | Nov. 13, 2023 | Nov. 13, 2023 | Nov. 13, 2023 | Dec. 12, 2027 | Dec. 12, 2027 | Dec. 12, 2027 | Dec. 12, 2027 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | AUD | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20 |  |  | $ 30
Series maximum amount |  |  |  |  |  |  | $ 20 |  |  |  | $ 30 |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | EUR | EUR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | € |  |  |  |  |  |  |  |  |  |  |  |  | € 26 |  |  |  |  |  |  |
Terms Years | P7Y | P7Y | P7Y | P7Y | P7Y | P7Y | P7Y |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) | 1.00% yearly | 1.00% yearly | 1.00% yearly | 1.00% yearly | 1.00% yearly | 1.00% yearly | 1.00% yearly |  |  |  |  |  |  |  |  |  |  |  |  |
Series approval date | Apr. 05, 2018 | Apr. 05, 2018 | Apr. 05, 2018 | Apr. 05, 2018 | Apr. 05, 2018 | Apr. 05, 2018 | Apr. 05, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | € |  |  | € 26 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | May 28, 2025 | May 28, 2025 | May 28, 2025 | May 28, 2025 | May 28, 2025 | May 28, 2025 | May 28, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | EUR | EUR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | € |  |  |  |  |  |  |  |  |  |  |  |  | 40 |  |  |  |  |  |  |
Terms Years | P12Y | P12Y | P12Y | P12Y | P12Y | P12Y | P12Y |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) | 1.78% yearly | 1.78% yearly | 1.78% yearly | 1.78% yearly | 1.78% yearly | 1.78% yearly | 1.78% yearly |  |  |  |  |  |  |  |  |  |  |  |  |
Series approval date | Aug. 06, 2018 | Aug. 06, 2018 | Aug. 06, 2018 | Aug. 06, 2018 | Aug. 06, 2018 | Aug. 06, 2018 | Aug. 06, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | € |  |  | € 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jun. 15, 2030 | Jun. 15, 2030 | Jun. 15, 2030 | Jun. 15, 2030 | Jun. 15, 2030 | Jun. 15, 2030 | Jun. 15, 2030 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | EUR | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | € |  |  |  |  |  |  |  |  |  |  |  |  | € 66 |  |  |  |  |  |  |
Series maximum amount | € |  |  | € 66 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Switzerland, Francs | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | SFr |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | SFr 115 |  |  |  |
Series maximum amount | SFr |  |  |  |  |  | SFr 115 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | Switzerland, Francs | CHF [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | SFr |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | SFr 115 |  |  |  |
Terms Years | P5Y3M18D | P5Y3M18D | P5Y3M18D | P5Y3M18D | P5Y3M18D | P5Y3M18D | P5Y3M18D |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 0.441% |  |  |  |  |  |  |  |  |  |  | 0.441% | 0.441% | 0.441% | 0.441% | 0.441% | 0.441% |  |  |
Series approval date | Sep. 21, 2018 | Sep. 21, 2018 | Sep. 21, 2018 | Sep. 21, 2018 | Sep. 21, 2018 | Sep. 21, 2018 | Sep. 21, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | SFr |  |  |  |  |  | SFr 115 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Dec. 21, 2023 | Dec. 21, 2023 | Dec. 21, 2023 | Dec. 21, 2023 | Dec. 21, 2023 | Dec. 21, 2023 | Dec. 21, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | JPY [Member] | JPY [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 4,000 |  |  |  |  |  |
Terms Years | P10Y7M6D | P10Y7M6D | P10Y7M6D | P10Y7M6D | P10Y7M6D | P10Y7M6D | P10Y7M6D |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Issuance rate (annual) | 0.65% anual | 0.65% anual | 0.65% anual | 0.65% anual | 0.65% anual | 0.65% anual | 0.65% anual |  |  |  |  |  |  |  |  |  |  |  |  |
Series approval date | Jul. 13, 2018 | Jul. 13, 2018 | Jul. 13, 2018 | Jul. 13, 2018 | Jul. 13, 2018 | Jul. 13, 2018 | Jul. 13, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | ¥ |  |  |  | ¥ 4,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Jan. 13, 2029 | Jan. 13, 2029 | Jan. 13, 2029 | Jan. 13, 2029 | Jan. 13, 2029 | Jan. 13, 2029 | Jan. 13, 2029 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | JPY [Member] | JPY [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 3,000 |  |  |  |  |  |
Terms Years | P5Y | P5Y | P5Y | P5Y | P5Y | P5Y | P5Y |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance rate (annual) | 56.00% |  |  |  |  |  |  |  |  |  |  | 56.00% | 56.00% | 56.00% | 56.00% | 56.00% | 56.00% |  |  |
Series approval date | Oct. 30, 2018 | Oct. 30, 2018 | Oct. 30, 2018 | Oct. 30, 2018 | Oct. 30, 2018 | Oct. 30, 2018 | Oct. 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Series maximum amount | ¥ |  |  |  | ¥ 3,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Oct. 30, 2023 | Oct. 30, 2023 | Oct. 30, 2023 | Oct. 30, 2023 | Oct. 30, 2023 | Oct. 30, 2023 | Oct. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Bonds [Member] | JPY [Member] | Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 7,000 |  |  |  |  |  |
Series maximum amount | ¥ |  |  |  | ¥ 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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