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Deferred Taxes - Additional Information (Detail) - CLP ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2017
Disclosure of income taxes [line items]        
Unrecognized deferred tax assets tax loss carryforwards       $ 0
Temporary differences associated with investments in subsidiaries and joint ventures $ 116,489,507,000     59,530,551,000
Deferred tax asset not recognized for deductible temporary differences $ 385,427,246,000     $ 238,424,357,000
Applicable tax rate under integrated system 24.00% 22.50% 21.00%  
2017 [Member]        
Disclosure of income taxes [line items]        
Applicable tax rate under integrated system 25.00%      
Applicable tax rate under integrated system 25.50%      
2018 [Member]        
Disclosure of income taxes [line items]        
Applicable tax rate under integrated system 27.00%