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Consolidated statements of changes in equity - USD ($)
$ in Thousands
Total
Minera Yanacocha SRL and subsidiary [Member]
Sociedads Mineras Cerro Verde Saa [Member]
Capital stock, net of treasury shares [member]
Capital stock, net of treasury shares [member]
Minera Yanacocha SRL and subsidiary [Member]
Capital stock, net of treasury shares [member]
Sociedads Mineras Cerro Verde Saa [Member]
Other reserves of equity [member]
Retained earnings [member]
Retained earnings [member]
Minera Yanacocha SRL and subsidiary [Member]
Retained earnings [member]
Sociedads Mineras Cerro Verde Saa [Member]
Equity attributable to owners of parent [member]
Non-controlling interests [member]
Additional paid-in capital [member]
Additional paid-in capital [member]
Minera Yanacocha SRL and subsidiary [Member]
Legal reserve [member]
Miscellaneous other reserves [member]
Miscellaneous other reserves [member]
Minera Yanacocha SRL and subsidiary [Member]
Miscellaneous other reserves [member]
Sociedads Mineras Cerro Verde Saa [Member]
Investement Share [Member]
Balance at Dec. 31, 2014 $ 3,762,125 $ 2,679,777 $ 4,465,090 $ 750,497 $ 398,216 $ 990,659 $ 1,755 $ 2,328,423 $ 2,279,490 $ 3,276,299 $ 3,464,105 $ 298,020 $ 219,055 $ 226 $ 162,710 $ 269 $ 1,845 $ 198,132 $ 1,396
Balance (in shares) at Dec. 31, 2014       253,715,190                              
Net profit (loss) (375,545) (450,195) 33,284 $ 0 0   0 (317,210) (450,195) 33,284 (317,210) (58,335) 0 0 0 0 0   0
Other comprehensive profit (loss) (542) (757)   0 0   485 0 0   485 (1,027) 0 0 0 0 (757)   0
Total other comprehensive profit (loss) (376,087) (450,952)   0 0   485 (317,210) (450,195)   (316,725) (59,362) 0 0 0 0 (757)   0
Dividends declared and paid (10,488)     0     0 0     0 (10,488) 0   0 0     0
Expired dividends 4     0     0 0     4 0 0   4 0     0
Other items 13,682     0     0 13,682     13,682 0 0   0 0     0
Balance at Dec. 31, 2015 3,389,236 2,228,825 4,498,374 $ 750,497 398,216 990,659 2,240 2,024,895 1,829,295 3,309,583 3,161,066 228,170 219,055 226 162,714 269 1,088 198,132 1,396
Balance (in shares) at Dec. 31, 2015       253,715,190                              
Net profit (loss) (327,814) (1,043,752) 340,907 $ 0 0 0 0 (323,492) (1,043,752) 340,907 (323,492) (4,322) 0 0 0 0 0 0 0
Other comprehensive profit (loss) (5,390) 651   0 0   (4,023) 0 0   (4,023) (1,367) 0 0 0 0 651   0
Total other comprehensive profit (loss) (333,204) (1,043,101)   0 0   (4,023) (323,492) (1,043,752)   (327,515) (5,689) 0 0 0 0 651   0
Treasury shares (1,210)     0     0 0     (1,210) 0 (605)   0 0     (605)
Dividends declared and paid (15,021) (300,000)   0 0   0 (7,621) (300,000)   (7,621) (7,400) 0 0 0 0 0   0
Expired dividends 30     0     0 0     30 0 0   30 0     0
Change in non-controlling interest, note 19(a) 7,382     0     0 (3,659)     (3,659) 11,041 0   0 0     0
Balance at Dec. 31, 2016 3,047,213 885,724 4,839,281 $ 750,497 398,216 990,659 (1,783) 1,690,123 485,543 3,650,490 2,821,091 226,122 218,450 226 162,744 269 1,739 198,132 791
Balance (in shares) at Dec. 31, 2016       253,715,190                              
Net profit (loss) 64,435 (175,454) 349,881 $ 0 0 0 0 60,823 (175,454) 349,881 60,823 3,612 0 0 0 0 0 0 0
Other comprehensive profit (loss) (19,286) (3,244)   0 0   (12,105) 0     (12,105) (7,181) 0 0 0 0 (3,244)   0
Total other comprehensive profit (loss) 45,149 (178,698)   0 0   (12,105) 60,823 (175,454)   48,718 (3,569) 0 0 0 0 (3,244)   0
Dividends declared and paid (28,135)     0     0 (22,099)     (22,099) (6,036) 0   0 0     0
Expired dividends 327     0     0 0     327 0 0   327 0     0
Change in non-controlling interest, note 19(a) (927)     0     0 0     0 (927) 0   0 0     0
Treasury shares, note 1   (47,911)     0       0         (47,911)     0    
Balance at Dec. 31, 2017 $ 3,063,627 $ 659,115 $ 5,189,162 $ 750,497 $ 398,216 $ 990,659 $ (13,888) $ 1,728,847 $ 310,089 $ 4,000,371 $ 2,848,037 $ 215,590 $ 218,450 $ (47,685) $ 163,071 $ 269 $ (1,505) $ 198,132 $ 791
Balance (in shares) at Dec. 31, 2017       253,715,190