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LONG-TERM DEBT (Details 4) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($)
Long Term Debt [Line Items] |  |
Liabilities Arising From Financing Activities | $ 1,144.6 |
Borrowings | 424.6 |
Repayments | (367.5) |
Fair Value changes | 26.1 |
Interest & Accretion | 60.3 |
Foreign Exchange | 0.0 |
Liabilities Arising From Financing Activities | 1,288.1 |
Long-term borrowings [member] |  |
Long Term Debt [Line Items] |  |
Liabilities Arising From Financing Activities | 889.5 |
Borrowings | 424.6 |
Repayments | (305.3) |
Fair Value changes | (3.3) |
Interest & Accretion | 2.2 |
Foreign Exchange | 0.0 |
Liabilities Arising From Financing Activities | 1,007.7 |
Interest Payable [Member] |  |
Long Term Debt [Line Items] |  |
Liabilities Arising From Financing Activities | 8.6 | [1]
Borrowings | 0.0 | [1]
Repayments | (59.8) | [1]
Fair Value changes | 0.0 | [1]
Interest & Accretion | 58.1 | [1]
Foreign Exchange | 0.0 | [1]
Liabilities Arising From Financing Activities | 6.9 | [1]
Gold stream obligation [Member] |  |
Long Term Debt [Line Items] |  |
Liabilities Arising From Financing Activities | 246.5 |
Borrowings | 0.0 |
Repayments | (2.4) |
Fair Value changes | 29.4 |
Interest & Accretion | 0.0 |
Foreign Exchange | 0.0 |
Liabilities Arising From Financing Activities | $ 273.5 |
[1] | For the purposes of this reconciliation, interest paid for the year ended December 31, 2017 excludes $3.9 million in standby fees on the Credit Facility and fees on the Company’s issued letters of credit.

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