Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Ifrs Statement Line Items
Revenue (note 10)	$ 347.1	$ 195.4	$ 656.0	$ 435.9
Costs of sales
Costs of sales (note 11)	47.3	28.0	87.9	71.6
Depletion and depreciation	77.2	52.3	148.4	116.7
Total costs of sales	124.5	80.3	236.3	188.3
Gross profit	222.6	115.1	419.7	247.6
Other operating expenses (income)
Impairment charges (note 7)	7.5		7.5	271.7
General and administrative expenses	5.4	4.9	9.6	9.8
Share-based compensation expenses (note 12)	5.0	6.8	7.0	8.1
Gain on sale of gold bullion	(0.6)	(2.4)	(1.2)	(4.4)
Total other operating expenses (income)	17.3	9.3	22.9	285.2
Operating income (loss)	205.3	105.8	396.8	(37.6)
Foreign exchange loss and other income (expenses)	(1.2)	(0.1)	(1.3)	(0.2)
Income (loss) before finance items and income taxes	204.1	105.7	395.5	(37.8)
Finance items (note 14)
Finance income	1.7	1.0	2.4	1.9
Finance expenses	(1.1)	(0.8)	(1.9)	(1.9)
Net income (loss) before income taxes	204.7	105.9	396.0	(37.8)
Income tax expense (recovery) (note 15)	29.4	11.5	49.2	(33.4)
Net income (loss)	175.3	94.4	346.8	(4.4)
Items that may be reclassified subsequently to profit and loss:
Currency translation adjustment	17.7	29.4	27.1	(34.2)
Items that will not be reclassified subsequently to profit and loss:
Gain on changes in the fair value of equity investments at fair value through other comprehensive income ("FVTOCI"), net of income tax (note 5)	46.7	37.0	65.3	1.7
Other comprehensive income (loss)	64.4	66.4	92.4	(32.5)
Comprehensive income (loss)	$ 239.7	$ 160.8	$ 439.2	$ (36.9)
Basic earnings (loss) per share (in dollars per share)	$ 0.92	$ 0.50	$ 1.82	$ (0.02)
Diluted earnings (loss) per share (in dollars per share)	$ 0.92	$ 0.50	$ 1.81	$ (0.02)
Weighted average basic number of shares outstanding	191.0	190.2	191.0	189.6
Weighted average diluted number of shares outstanding	191.4	190.6	191.3	189.6

No definition available.

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- Definition

The amount of costs relating to expenses directly or indirectly attributed to the goods or services sold, which may include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, unallocated production overheads and abnormal amounts of production costs of inventories but excluding depletion and depreciation expense.

+ References

No definition available.