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DERIVATIVE INSTRUMENTS - Swap contracts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
(LOSS) GAIN ON SWAP CONTRACTS |  |
Realized | $ (3.0) | $ 12.6
Unrealized | (1.3) | 0.9
Total (loss) gain | (4.3) | 13.5
Gold |  |
(LOSS) GAIN ON SWAP CONTRACTS |  |
Realized | (3.2) | 1.3
Unrealized | (0.4) | (0.8)
Total (loss) gain | (3.6) | 0.5
Copper |  |
(LOSS) GAIN ON SWAP CONTRACTS |  |
Realized | 0.2 | 11.3
Unrealized | (0.9) | 1.7
Total (loss) gain | $ (0.7) | $ 13.0

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- References No definition available. + Details
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- Definition The gains (losses) on swap contracts which realised duirng the reporting period. + References No definition available. + Details
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- Definition The gains (losses) on swap contracts which recognised during the reporting period. + References No definition available. + Details
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- Definition The gains (losses) on swap contracts which recognised as unrealised duirng the reporting period. + References No definition available. + Details
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- Details
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