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GOLD STREAM OBLIGATION (Tables) | 12 Months Ended
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Dec. 31, 2017
Gold stream obligation [Abstract] |
Detailed Information About Gold Stream Obligation [Text Block] | The following is a summary of the changes in the Company’s gold stream obligation:
(in millions of U.S. dollars) |  |  |  |
Change in Stream Obligation |  |  |  |
Balance, December 31, 2015 |  |  |  | 147.6
Fair value adjustments related to changes in the Company’s own credit risk(1) |  |  |  | 67.8
Other fair value adjustments(2) |  |  |  | 31.1
Balance, December 31, 2016 |  |  |  | 246.5
Settlements during the period(3) |  |  |  | (2.4)
Fair value adjustments related to changes in the Company’s own credit risk(1) |  |  |  | 7.6
Other fair value adjustments(2) |  |  |  | 21.8
Balance, December 31, 2017 |  |  |  | 273.5
Less: current portion of gold stream obligation |  |  |  | (24.5)
Non-current portion of gold stream obligation |  |  |  | 249.0
| 1. | Fair value adjustments related to changes in the Company’s own credit risk are included in other comprehensive income.
| 2. | Other fair value adjustments are included in the consolidated income statements.
| 3. | Of the total $2.4 million in settlements, $1.3 million is unpaid and included in accruals as at December 31, 2017.

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