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Derivative Financial Instruments and Hedge Accounting (Details 4) - Cash Flow Hedge [Member] - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Inflation rate risk [member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | $ 573,435 | $ 437,678
Inflation rate risk [member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (14,036) | (1,645)
Inflation rate risk [member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 587,471 | 439,323
Inflation rate risk [member] | 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
Inflation rate risk [member] | Between 3 and 6 years [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  |  |
Inflation rate risk [member] | 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
Inflation rate risk [member] | 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
Inflation rate risk [member] | Between 1 and 3 years [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  |  |
Inflation rate risk [member] | 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
Inflation rate risk [member] | 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
Inflation rate risk [member] | Due Within 1 Year [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (14,036) | (1,645)
Inflation rate risk [member] | Due Within 1 Year [Member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 37,086 | 20,300
Inflation rate risk [member] | Over 6 years [Member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 310,293 | 286,471
Inflation rate risk [member] | Over 6 years [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  |  |
Inflation rate risk [member] | Over 6 years [Member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 310,293 | 286,471
Inflation rate risk [member] | Hedging Instruments Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (573,435) | (437,678)
Inflation rate risk [member] | Hedging Instruments Net flows [Member] | Between 3 and 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (166,516) | (103,544)
Inflation rate risk [member] | Hedging Instruments Net flows [Member] | Between 1 and 3 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (73,576) | (29,008)
Inflation rate risk [member] | Hedging Instruments Net flows [Member] | Due Within 1 Year [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (23,050) | (18,655)
Inflation rate risk [member] | Hedging Instruments Net flows [Member] | Over 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (310,293) | (286,471)
Inflation rate risk [member] | Hedging Instruments Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (587,471) | (439,323)
Inflation rate risk [member] | Hedging Instruments Outflows [Member] | Between 3 and 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (166,516) | (103,544)
Inflation rate risk [member] | Hedging Instruments Outflows [Member] | Between 1 and 3 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (73,576) | (29,008)
Inflation rate risk [member] | Hedging Instruments Outflows [Member] | Due Within 1 Year [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (37,086) | (20,300)
Inflation rate risk [member] | Hedging Instruments Outflows [Member] | Over 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (310,293) | (286,471)
Inflation rate risk [member] | Hedging Instruments Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 14,036 | 1,645
Inflation rate risk [member] | Hedging Instruments Inflows [Member] | Between 3 and 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  |  |
Inflation rate risk [member] | Hedging Instruments Inflows [Member] | Between 1 and 3 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  |  |
Inflation rate risk [member] | Hedging Instruments Inflows [Member] | Due Within 1 Year [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 14,036 | 1,645
Inflation rate risk [member] | Hedging Instruments Inflows [Member] | Over 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  |  |
Interest rate risk [member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (71,938) | 272,751
Interest rate risk [member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (190,131) | (112,875)
Interest rate risk [member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 118,193 | 385,626
Interest rate risk [member] | Between 3 and 6 years [Member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (10,249) | 6,023
Interest rate risk [member] | Between 3 and 6 years [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (13,311) | (7,757)
Interest rate risk [member] | Between 3 and 6 years [Member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 3,062 | 13,780
Interest rate risk [member] | Between 1 and 3 years [Member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (10,378) | 17,008
Interest rate risk [member] | Between 1 and 3 years [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (46,372) | (43,507)
Interest rate risk [member] | Between 1 and 3 years [Member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 35,994 | 60,515
Interest rate risk [member] | Due Within 1 Year [Member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (49,011) | 248,004
Interest rate risk [member] | Due Within 1 Year [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (125,747) | (60,733)
Interest rate risk [member] | Due Within 1 Year [Member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 76,736 | 308,737
Interest rate risk [member] | Over 6 years [Member] | Hedged Items Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (2,300) | 1,716
Interest rate risk [member] | Over 6 years [Member] | Hedged Items Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | (4,701) | (878)
Interest rate risk [member] | Over 6 years [Member] | Hedged Items Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 2,401 | 2,594
Interest rate risk [member] | Hedging Instruments Net flows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 71,938 | (272,751)
Interest rate risk [member] | Hedging Instruments Net flows [Member] | Between 3 and 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 10,249 | (6,023)
Interest rate risk [member] | Hedging Instruments Net flows [Member] | Between 1 and 3 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 10,378 | (17,008)
Interest rate risk [member] | Hedging Instruments Net flows [Member] | Due Within 1 Year [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 49,011 | (248,004)
Interest rate risk [member] | Hedging Instruments Net flows [Member] | Over 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 2,300 | (1,716)
Interest rate risk [member] | Hedging Instruments Outflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows | [1] | (118,193) | (385,626)
Interest rate risk [member] | Hedging Instruments Outflows [Member] | Between 3 and 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows | [1] | (3,062) | (13,780)
Interest rate risk [member] | Hedging Instruments Outflows [Member] | Between 1 and 3 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows | [1] | (35,994) | (60,515)
Interest rate risk [member] | Hedging Instruments Outflows [Member] | Due Within 1 Year [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows | [1] | (76,736) | (308,737)
Interest rate risk [member] | Hedging Instruments Outflows [Member] | Over 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows | [1] | (2,401) | (2,594)
Interest rate risk [member] | Hedging Instruments Inflows [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 190,131 | 112,875
Interest rate risk [member] | Hedging Instruments Inflows [Member] | Between 3 and 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 13,311 | 7,757
Interest rate risk [member] | Hedging Instruments Inflows [Member] | Between 1 and 3 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 46,372 | 43,507
Interest rate risk [member] | Hedging Instruments Inflows [Member] | Due Within 1 Year [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | 125,747 | 60,733
Interest rate risk [member] | Hedging Instruments Inflows [Member] | Over 6 years [Member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Forecasted cash flows |  | $ 4,701 | $ 878
[1] | Only includes cash flow forecast portion of the hedge instruments used to cover interest rate risk.

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