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v3.19.1

Property, plant and equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | $ 4,227,397 | $ 3,645,827
Impairment | 447,808 | 0
Ending balance | 3,988,476 | 4,227,397
Land and buildings [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 142,497 | 125,905
Ending balance | 144,270 | 142,497
Plant and equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 745,590 | 710,307
Ending balance | 1,103,270 | 745,590
Capital works in progress [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 52,088 | 137,189
Ending balance | 109,361 | 52,088
Mineral properties and leases [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 3,200,191 | 2,594,931
Ending balance | 2,538,116 | 3,200,191
Capitalized Evaluation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 87,031 | 77,495
Ending balance | 93,459 | 87,031
Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 6,347,014 | 5,678,378
Additions/transfers | 363,436 | 349,090
Acquisition of Integra |  | 393,647
Proceeds on pre-commercial production sales | (48,868) | (38,200)
Olympias commercial production transfers | 13,288 |
Other movements | 14,566 | (2,578)
Disposals | (8,449) | (33,323)
Ending balance | 6,680,987 | 6,347,014
Cost [member] | Land and buildings [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 185,923 | 164,540
Additions/transfers | 6,203 | 12,322
Acquisition of Integra |  | 4,820
Proceeds on pre-commercial production sales | 0 | 0
Olympias commercial production transfers | 387 |
Other movements | (240) | 4,251
Disposals | (29) | (10)
Ending balance | 192,244 | 185,923
Cost [member] | Plant and equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 1,531,640 | 1,416,948
Additions/transfers | 119,712 | 115,684
Acquisition of Integra |  | 3,646
Proceeds on pre-commercial production sales | (9,179) | 0
Olympias commercial production transfers | 465,249 |
Other movements | 13,011 | (2,325)
Disposals | (8,400) | (2,313)
Ending balance | 2,112,033 | 1,531,640
Cost [member] | Capital works in progress [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 56,821 | 141,922
Additions/transfers | 1,646 | (42,933)
Acquisition of Integra |  | 0
Proceeds on pre-commercial production sales | 0 | 0
Olympias commercial production transfers | 53,858 |
Other movements | 1,769 | (12,336)
Disposals | 0 | (29,832)
Ending balance | 114,094 | 56,821
Cost [member] | Mineral properties and leases [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 4,485,599 | 3,877,473
Additions/transfers | 229,673 | 254,481
Acquisition of Integra |  | 385,181
Proceeds on pre-commercial production sales | (39,689) | (38,200)
Olympias commercial production transfers | (506,206) |
Other movements | (200) | 7,832
Disposals | (20) | (1,168)
Ending balance | 4,169,157 | 4,485,599
Cost [member] | Capitalized Evaluation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 87,031 | 77,495
Additions/transfers | 6,202 | 9,536
Acquisition of Integra |  | 0
Proceeds on pre-commercial production sales | 0 | 0
Olympias commercial production transfers | 0 |
Other movements | 226 | 0
Disposals | 0 | 0
Ending balance | 93,459 | 87,031
Depreciation and impairment losses [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (2,119,617) | (2,032,551)
Depreciation for the year | (95,548) | (86,237)
Olympias commercial production transfers | (13,288) |
Other movements | (16,891) | (2,514)
Impairment | (447,808) |
Disposals | 641 | 1,685
Ending balance | (2,692,511) | (2,119,617)
Depreciation and impairment losses [member] | Land and buildings [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (43,426) | (38,635)
Depreciation for the year | (3,125) | (4,245)
Olympias commercial production transfers | 0 |
Other movements | (1,060) | (546)
Impairment | (363) |
Disposals | 0 | 0
Ending balance | (47,974) | (43,426)
Depreciation and impairment losses [member] | Plant and equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (786,050) | (706,641)
Depreciation for the year | (88,649) | (79,044)
Olympias commercial production transfers | (13,288) |
Other movements | (15,485) | (2,048)
Impairment | (105,932) |
Disposals | 641 | 1,683
Ending balance | (1,008,763) | (786,050)
Depreciation and impairment losses [member] | Capital works in progress [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (4,733) | (4,733)
Depreciation for the year | 0 | 0
Olympias commercial production transfers | 0 |
Other movements | 0 | 0
Impairment | 0 |
Disposals | 0 | 0
Ending balance | (4,733) | (4,733)
Depreciation and impairment losses [member] | Mineral properties and leases [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (1,285,408) | (1,282,542)
Depreciation for the year | (3,774) | (2,948)
Olympias commercial production transfers | 0 |
Other movements | (346) | 80
Impairment | (341,513) |
Disposals | 0 | 2
Ending balance | (1,631,041) | (1,285,408)
Depreciation and impairment losses [member] | Capitalized Evaluation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 0 | 0
Depreciation for the year | 0 | 0
Olympias commercial production transfers | 0 |
Other movements | 0 | 0
Impairment | 0 |
Disposals | 0 | 0
Ending balance | $ 0 | $ 0

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