XML 197 R183.htm IDEA: XBRL DOCUMENT v3.19.1
Tax situation (Details 6) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income tax      
Current $ 16,928 $ 23,837 $ 39,444
Deferred 9,998 (5,825) 14,060
Supplementary retirement fund      
Income tax expense reported in the statements of comprehensive income (26,926) (18,012) (53,504)
Sociedad Minera Cerro Verde S.A.A. [Member]      
Income tax      
Current (325,170) 430,974 141,153
Deferred 0 (167,541) 81,441
Current and deferred tax relating to items credited (charged) directly to equity 256,569 263,433 222,594
Mining taxes      
Current Mining Royalty and Special Mining Tax 65,055 213,280 37,763
Supplementary retirement fund      
Current 1,499 10,897 2,205
Deferred 760 (1,567) 520
Total Supplementary retirement fund 3,546 9,330 2,725
Income tax expense reported in the statements of comprehensive income $ 325,170 $ (486,043) $ (263,082)