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Employee Benefits (Details 3) - CLP ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Employee Benefits [Line Items]
Balance	$ 22,153,423
Balance	23,699,115	$ 22,153,423
Severance Indemniy [Member]
Disclosure Of Employee Benefits [Line Items]
Balance	22,153,423	19,043,559
Current cost of service	1,942,099	1,650,484
Interest cost	1,850,598	1,702,662
Actuarial (Gain) losses	(99,357)	2,342,336
Paid-up benefits	(1,934,587)	(2,490,851)
Past service cost	604,337	342,039
Conversion effect	(694,189)	(670,709)
Others	(123,209)	233,903
Movements of the year	1,545,692	3,109,864
Balance	$ 23,699,115	$ 22,153,423

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The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from past service cost. Past service cost is the change in the present value of the defined benefit obligation for employee service in prior periods, resulting from a plan amendment (the introduction or withdrawal of, or changes to, a defined benefit plan) or a curtailment (a significant reduction by the entity in the number of employees covered by a plan). [Refer: Net defined benefit liability (asset); Defined benefit plans [member]]

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The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)]

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The amount of deficit in a defined benefit plan. [Refer: Defined benefit plans [member]]

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