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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGE ACCOUNTING (Details 4) - Cash Flow Hedge [Member] - Inflation rate risk [member] - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Hedging Instruments Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | $ 14,036 | $ 1,645
Hedging Instruments Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (587,471) | (439,323)
Hedging Instruments Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (573,435) | (437,678)
Hedged Items Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 587,471 | 439,323
Hedged Items Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (14,036) | (1,645)
Hedged Items Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 573,435 | 437,678
Due Within 1 Year [Member] | Hedging Instruments Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 14,036 | 1,645
Due Within 1 Year [Member] | Hedging Instruments Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (37,086) | (20,300)
Due Within 1 Year [Member] | Hedging Instruments Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (23,050) | (18,655)
Due Within 1 Year [Member] | Hedged Items Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 37,086 | 20,300
Due Within 1 Year [Member] | Hedged Items Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (14,036) | (1,645)
Due Within 1 Year [Member] | Hedged Items Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 23,050 | 18,655
Between 1 and 3 years [Member] | Hedging Instruments Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows |  |
Between 1 and 3 years [Member] | Hedging Instruments Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (73,576) | (29,008)
Between 1 and 3 years [Member] | Hedging Instruments Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (73,576) | (29,008)
Between 1 and 3 years [Member] | Hedged Items Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 73,576 | 29,008
Between 1 and 3 years [Member] | Hedged Items Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows |  |
Between 1 and 3 years [Member] | Hedged Items Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 73,576 | 29,008
Between 3 and 6 years [Member] | Hedging Instruments Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows |  |
Between 3 and 6 years [Member] | Hedging Instruments Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (166,516) | (103,544)
Between 3 and 6 years [Member] | Hedging Instruments Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (166,516) | (103,544)
Between 3 and 6 years [Member] | Hedged Items Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 166,516 | 103,544
Between 3 and 6 years [Member] | Hedged Items Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows |  |
Between 3 and 6 years [Member] | Hedged Items Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 166,516 | 103,544
Over 6 years [Member] | Hedging Instruments Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows |  |
Over 6 years [Member] | Hedging Instruments Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (310,293) | (286,471)
Over 6 years [Member] | Hedging Instruments Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | (310,293) | (286,471)
Over 6 years [Member] | Hedged Items Inflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | 310,293 | 286,471
Over 6 years [Member] | Hedged Items Outflows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows |  |
Over 6 years [Member] | Hedged Items Net flows [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Forecasted cash flows | $ 310,293 | $ 286,471

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