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Financial Instruments (Details 5) - CLP ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Financial Instrument [Line Items]    
Derivative financial instruments $ 5,076,582 $ 788,729
Market securities and investments in other companies 7,565,805 7,821,546
Derivative hedge assets 1,918,191 309,237
Fair value financial assets 12,642,387 8,610,275
Derivative hedge liabilities 1,840,188  
Derivative financial instruments 10,416,675 11,118,676
Fair value financial liabilities 12,256,863 11,118,676
Fair value hierarchyLevel 1 [member]    
Disclosure of Financial Instrument [Line Items]    
Derivative financial instruments 0 0
Market securities and investments in other companies 7,565,805 7,821,546
Derivative hedge assets 0 0
Fair value financial assets 7,565,805 7,821,546
Derivative hedge liabilities 0  
Derivative financial instruments 0 0
Fair value financial liabilities 0 0
Fair value hierarchyLevel 2 [member]    
Disclosure of Financial Instrument [Line Items]    
Derivative financial instruments 3,158,391 479,492
Market securities and investments in other companies 0 0
Derivative hedge assets 1,918,191 309,237
Fair value financial assets 5,076,582 788,729
Derivative hedge liabilities 1,840,188  
Derivative financial instruments 10,416,675 11,118,676
Fair value financial liabilities 12,256,863 11,118,676
Fair value hierarchyLevel 3 [member]    
Disclosure of Financial Instrument [Line Items]    
Derivative financial instruments 0 0
Market securities and investments in other companies 0 0
Derivative hedge assets 0 0
Fair value financial assets 0 0
Derivative hedge liabilities 0  
Derivative financial instruments 0 0
Fair value financial liabilities $ 0 $ 0