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SEGMENT INFORMATION - Consolidated Statements of Income Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure of operating segments [line items] |  |  |  |
Capital expenditures | $ 403 | $ 341 | $ 851 | $ 672
Revenue | 2,063 | 1,712 | 4,156 | 3,502
Depreciation | 466 | 328 | 901 | 653
Exploration, evaluation and project expenses | 98 | 97 | 172 | 170
Other expenses (income) | 7 | 38 | 34 | 39
Net income (loss) | 223 | (76) | 363 | 116
Share of income (loss) | 29 | 18 | 58 | 52
Change in net income | 0 |  |  |
Cost of sales (excluding depreciation) | 1,545 | 1,176 | 3,035 | 2,328
Adjustments for gains (losses) on change in fair value of derivatives | (8) | (6) | 14 | (29)
Pierina |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Cost of sales (excluding depreciation) | 44 | 30 | 71 | 62
Operating segments [member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Capital expenditures | 397 | 315 | 802 | 612
Revenue | 2,188 | 1,712 | 4,398 | 3,502
Direct mining, royalties and community relations | 1,130 | 846 | 2,238 | 1,671
Depreciation | 490 | 320 | 971 | 637
Exploration, evaluation and project expenses | 15 | 19 | 28 | 28
Other expenses (income) | 35 | 38 | 74 | 37
Net income (loss) | 518 | 489 | 1,087 | 1,129
Accretion | 12 | 13 | 26 | 25
Material reconciling items [member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Exploration, evaluation and project expenses | 83 | 78 | 144 | 142
Other expenses (income) | (16) | 9 | (15) | 28
Cost of sales (excluding depreciation) | 7 | 10 | 16 | 20
Unrealized Gains (Losses) on Change in Fair Value of Derivatives | 0 | 0 | 1 | 0
Hedging gains (losses) for hedge of group of items with offsetting risk positions | 0 | (1) | 0 | (2)
Consolidated total [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 2,063 | 1,712 | 4,156 | 3,502
Direct mining, royalties and community relations | 1,079 | 846 | 2,135 | 1,671
Depreciation | 459 | 320 | 884 | 637
Exploration, evaluation and project expenses | 15 | 19 | 28 | 28
Other expenses (income) | 35 | 38 | 75 | 37
Net income (loss) | $ 475 | $ 489 | $ 1,034 | $ 1,129

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