XML 126 R95.htm IDEA: XBRL DOCUMENT
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Mining Interest Schedule (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | $ 2,124,133 | $ 1,950,356
Property, plant and equipment, ending balance | 2,035,097 | 2,124,133
Reconciliation Of Changes In Joint Ventures Accounted For Using Equity Method [Roll Forward] |  |
Investments in joint ventures (accounted for using the equity method) beginning balance | 65,830 |
Investments in joint ventures (accounted for using the equity method) ending balance | 72,078 | 65,830
Reconciliation Of Changes In Property, Plant And Equipment And Joint Ventures Accounted For Using Equity Method [Roll Forward] |  |
Total property, plant and equipment and joint ventures, beginning balance | 2,189,963 | 2,004,080
Total property, plant and equipment and joint ventures, ending balance | 2,107,175 | 2,189,963
Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 2,909,819 | 2,546,361
Additions | 271,521 | 376,443
Disposals / write-offs / impairments | (69,847) | (15,449)
Reclass | 1,633 | 2,464
Property, plant and equipment, ending balance | 3,113,126 | 2,909,819
Reconciliation Of Changes In Property, Plant And Equipment And Joint Ventures Accounted For Using Equity Method [Roll Forward] |  |
Total property, plant and equipment and joint ventures, beginning balance | 2,975,649 | 2,600,085
Additions | 277,769 | 388,549
Disposals / write-offs / impairments | (69,847) | (15,449)
Total property, plant and equipment and joint ventures, ending balance | 3,185,204 | 2,975,649
Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (785,686) | (596,005)
Depreciation | (295,320) | (200,404)
Disposals / write-offs / impairments | 2,977 | 10,723
Property, plant and equipment, ending balance | (1,078,029) | (785,686)
Property, plant and equipment (depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 1,972,451 | 856,172
Property, plant and equipment, ending balance | 1,881,768 | 1,972,451
Property, plant and equipment (depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 2,756,584 | 1,450,837
Additions | 243,131 | 188,195
Disposals / write-offs / impairments | (44,021) | (13,999)
Reclass | 2,265 | 1,131,551
Property, plant and equipment, ending balance | 2,957,959 | 2,756,584
Property, plant and equipment (depletable) | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (784,133) | (594,665)
Depreciation | (295,035) | (200,191)
Disposals / write-offs / impairments | 2,977 | 10,723
Property, plant and equipment, ending balance | (1,076,191) | (784,133)
Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 150,971 | 123,962
Property, plant and equipment, ending balance | 152,649 | 150,971
Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 150,971 | 123,962
Additions | 28,136 | 28,459
Disposals / write-offs / impairments | (25,826) | (1,450)
Reclass | (632) | 0
Property, plant and equipment, ending balance | 152,649 | 150,971
Office, furniture and equipment, net |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 711 | 487
Property, plant and equipment, ending balance | 680 | 711
Office, furniture and equipment, net | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 2,264 | 1,827
Additions | 254 | 437
Disposals / write-offs / impairments | 0 | 0
Reclass | 0 | 0
Property, plant and equipment, ending balance | 2,518 | 2,264
Office, furniture and equipment, net | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (1,553) | (1,340)
Depreciation | (285) | (213)
Disposals / write-offs / impairments | 0 | 0
Property, plant and equipment, ending balance | (1,838) | (1,553)
Fekola | Property, plant and equipment (depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 1,059,307 | 0
Property, plant and equipment, ending balance | 1,024,156 | 1,059,307
Fekola | Property, plant and equipment (depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 1,094,784 | 0
Additions | 71,767 | 26,577
Disposals / write-offs / impairments | (325) | 0
Reclass | 2,265 | 1,068,207
Property, plant and equipment, ending balance | 1,168,491 | 1,094,784
Fekola | Property, plant and equipment (depletable) | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (35,477) | 0
Depreciation | (108,895) | (35,477)
Disposals / write-offs / impairments | 37 | 0
Property, plant and equipment, ending balance | (144,335) | (35,477)
Fekola | Mine under construction (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 0 | 908,855
Property, plant and equipment, ending balance |  | 0
Fekola | Mine under construction (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 0 | 908,855
Additions |  | 159,352
Disposals / write-offs / impairments |  | 0
Reclass |  | (1,068,207)
Property, plant and equipment, ending balance |  | 0
Otjikoto | Property, plant and equipment (depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 363,916 | 385,680
Property, plant and equipment, ending balance | 336,548 | 363,916
Otjikoto | Property, plant and equipment (depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 527,069 | 481,378
Additions | 52,386 | 46,193
Disposals / write-offs / impairments | (4,328) | (2,966)
Reclass | 0 | 2,464
Property, plant and equipment, ending balance | 575,127 | 527,069
Otjikoto | Property, plant and equipment (depletable) | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (163,153) | (95,698)
Depreciation | (76,608) | (67,680)
Disposals / write-offs / impairments | 1,182 | 225
Property, plant and equipment, ending balance | (238,579) | (163,153)
Masbate | Property, plant and equipment (depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 431,797 | 352,233
Property, plant and equipment, ending balance | 433,488 | 431,797
Masbate | Property, plant and equipment (depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 625,722 | 517,457
Additions | 56,598 | 56,815
Disposals / write-offs / impairments | (811) | (9,430)
Reclass | 0 | 60,880
Property, plant and equipment, ending balance | 681,509 | 625,722
Masbate | Property, plant and equipment (depletable) | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (193,925) | (165,224)
Depreciation | (54,907) | (37,999)
Disposals / write-offs / impairments | 811 | 9,298
Property, plant and equipment, ending balance | (248,021) | (193,925)
Masbate | Undeveloped mineral interests |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 0 | 60,880
Property, plant and equipment, ending balance |  | 0
Masbate | Undeveloped mineral interests | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 0 | 60,880
Additions |  | 0
Disposals / write-offs / impairments |  | 0
Reclass |  | (60,880)
Property, plant and equipment, ending balance |  | 0
Libertad | Property, plant and equipment (depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 71,813 | 74,328
Property, plant and equipment, ending balance | 19,854 | 71,813
Libertad | Property, plant and equipment (depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 335,651 | 300,816
Additions | 31,544 | 35,190
Disposals / write-offs / impairments | (51,626) | (355)
Reclass | 0 | 0
Property, plant and equipment, ending balance | 315,569 | 335,651
Libertad | Property, plant and equipment (depletable) | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (263,838) | (226,488)
Depreciation | (32,501) | (37,425)
Disposals / write-offs / impairments | 624 | 75
Property, plant and equipment, ending balance | (295,715) | (263,838)
Limon | Property, plant and equipment (depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 45,618 | 43,931
Property, plant and equipment, ending balance | 67,722 | 45,618
Limon | Property, plant and equipment (depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 173,358 | 151,186
Additions | 30,836 | 23,420
Disposals / write-offs / impairments | 13,069 | (1,248)
Reclass | 0 | 0
Property, plant and equipment, ending balance | 217,263 | 173,358
Limon | Property, plant and equipment (depletable) | Accumulated depreciation and depletion |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | (127,740) | (107,255)
Depreciation | (22,124) | (21,610)
Disposals / write-offs / impairments | 323 | 1,125
Property, plant and equipment, ending balance | (149,541) | (127,740)
Kiaka | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 69,989 | 64,907
Property, plant and equipment, ending balance | 73,173 | 69,989
Kiaka | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 69,989 | 64,907
Additions | 2,697 | 5,082
Disposals / write-offs / impairments | 0 | 0
Reclass | 487 | 0
Property, plant and equipment, ending balance | 73,173 | 69,989
Fekola Regional | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 17,211 | 9,326
Property, plant and equipment, ending balance | 21,903 | 17,211
Fekola Regional | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 17,211 | 9,326
Additions | 4,692 | 7,885
Disposals / write-offs / impairments | 0 | 0
Reclass | 0 | 0
Property, plant and equipment, ending balance | 21,903 | 17,211
Toega, Burkina Faso | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 10,603 | 4,819
Property, plant and equipment, ending balance | 19,581 | 10,603
Toega, Burkina Faso | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 10,603 | 4,819
Additions | 8,978 | 5,784
Disposals / write-offs / impairments | 0 | 0
Reclass | 0 | 0
Property, plant and equipment, ending balance | 19,581 | 10,603
Mocoa Royalty, Colombia | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 29,041 |
Property, plant and equipment, ending balance | 10,230 | 29,041
Mocoa Royalty, Colombia | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 29,041 |
Additions | 7 |
Disposals / write-offs / impairments | 18,186 |
Reclass | (632) |
Property, plant and equipment, ending balance | 10,230 | 29,041
Mocoa | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 29,041 | 29,004
Property, plant and equipment, ending balance |  | 29,041
Mocoa | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 29,041 | 29,004
Additions |  | 37
Disposals / write-offs / impairments |  | 0
Reclass |  | 0
Property, plant and equipment, ending balance | 11,000 | 29,041
Ondundu | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 5,246 | 2,130
Property, plant and equipment, ending balance | 8,273 | 5,246
Ondundu | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 5,246 | 2,130
Additions | 3,027 | 3,116
Disposals / write-offs / impairments | 0 | 0
Reclass | 0 | 0
Property, plant and equipment, ending balance | 8,273 | 5,246
Finland | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 2,991 | 1,642
Property, plant and equipment, ending balance | 5,947 | 2,991
Finland | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 2,991 | 1,642
Additions | 2,956 | 1,349
Disposals / write-offs / impairments | 0 | 0
Reclass | 0 | 0
Property, plant and equipment, ending balance | 5,947 | 2,991
Other | Exploration and evaluation properties (non-depletable) |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 15,890 | 12,134
Property, plant and equipment, ending balance | 13,542 | 15,890
Other | Exploration and evaluation properties (non-depletable) | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment, beginning balance | 15,890 | 12,134
Additions | 5,779 | 5,206
Disposals / write-offs / impairments | (7,640) | (1,450)
Reclass | (487) | 0
Property, plant and equipment, ending balance | 13,542 | 15,890
Gramalote |  |
Reconciliation Of Changes In Joint Ventures Accounted For Using Equity Method [Roll Forward] |  |
Investments in joint ventures (accounted for using the equity method) beginning balance | 65,830 | 53,724
Additions | 6,248 | 12,106
Disposals / write-offs / impairments | 0 | 0
Investments in joint ventures (accounted for using the equity method) ending balance | $ 72,078 | $ 65,830

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