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v3.8.0.1

FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Long-term debts [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | $ 1,064.3 | $ 920.0
Gold stream obligation [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 273.5 | 246.5
Cash and cash equivalent [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 216.2 | 185.9
Trade and other receivables [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 29.0 | 41.6
Investment [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 1.0 | 1.1
Financial liabilities at amortised cost, category [member] | Long-term debts [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 1,007.7 | 889.5
Financial liabilities at amortised cost, category [member] | Trade and other receivables [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value | [1] | 146.0 | 168.3
Financial liabilities at fair value through profit or loss, category [member] | Level 2 of fair value hierarchy [member] | Copper price option contracts [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 4.1 | 0.0
Financial liabilities at fair value through profit or loss, category [member] | Level 1 of fair value hierarchy [member] | Warants [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 0.0 | 1.3
Financial liabilities at fair value through profit or loss, category [member] | Level 1 of fair value hierarchy [member] | Restricted share units [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 0.8 | 0.9
Financial liabilities at fair value through profit or loss, category [member] | Level 3 of fair value hierarchy [member] | Gold stream obligation [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 273.5 | 246.5
Financial liabilities at fair value through profit or loss, category [member] | Level 3 of fair value hierarchy [member] | Perfomance share units [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 1.8 | 2.1
Financial liabilities at fair value through other comprehensive income, category [Member] | Level 2 of fair value hierarchy [member] | Diesel swap contract [Member] |  |  |
FINANCIAL LIABILITIES |  |  |
Financial liabilities, at fair value |  | 0.0 | 0.1
Financial assets at amortised cost, category [member] | Cash and cash equivalent [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 216.2 | 185.9
Financial assets at amortised cost, category [member] | Trade and other receivables [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 29.0 | 41.6
Financial assets at fair value through profit or loss, category [member] | Level 2 of fair value hierarchy [member] | Provisionally priced contracts [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 4.2 | 4.5
Financial assets at fair value through profit or loss, category [member] | Level 2 of fair value hierarchy [member] | Gold and copper swap contracts [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | (6.1) | (9.0)
Financial assets at fair value through profit or loss, category [member] | Level 2 of fair value hierarchy [member] | Gold price option contracts [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 0.0 | 17.6
Financial assets at fair value through profit or loss, category [member] | Level 2 of fair value hierarchy [member] | Copper forward contract [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | 0.0 | 0.3
Financial assets at fair value through profit or loss, category [member] | Level 1 of fair value hierarchy [member] | Investment [Member] |  |  |
FINANCIAL ASSETS |  |  |
Financial assets, at fair value |  | $ 1.0 | $ 1.1
[1] | Trade and other payables exclude the short-term portion of reclamation and closure cost obligations, copper forward contracts and the short-term portion of the gold stream obligation.

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