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Interest-bearing loans and borrowings (Tables)
12 Months Ended
Dec. 31, 2017
Borrowings [abstract]  
Schedule of interest-bearing loans and borrowings

This caption is made up as follows:

 

   Nominal interest
rate
   Maturity   2017   2016 
   %        S/(000)   S/(000) 
Senior Notes                    
Principal, net of issuance costs   4.50    Feb 8, 2023    965,290    998,148 
                     
Total non-current loans             965,290    998,148