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PROPERTY, PLANT, AND EQUIPMENT (Details 2) - CLP ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total $ 4,950 $ 4,244
Due Within 1 Year [Member]    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 469 567
Due After 1 Year But Within 2 Years [Member]    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 882 749
Due After 2 Years But Within 3 years [Member]    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 469 480
Due After 3 Years But Within 4 Years [Member]    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 460 348
Due After 4 Years But Within 5 Years [Member]    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 428 308
Due After 5 Years [Member]    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total $ 2,242 $ 1,792