| In millions, except per share items | Dec-31-19 | Dec-31-18 | Dec-31-16 | Dec-31-15 | Dec-31-12 | Dec-31-11 | Dec-31-10 | Dec-31-09 |
| | Source | Source | Source | Source | 10-K | 10-K | 10-K | 10-K |
| Revenues [+] | 0.0 | 0.0 | 0.0 | 0.0 | 550.5 | 471.0 | 432.7 | 400.7 |
| Mineral sales | | | | | 550.5 | 471.0 | 432.7 | 400.7 |
| Revenue growth | | | | | 16.9% | 8.9% | 8.0% | |
| Cost of goods sold [+] | 0.0 | 0.0 | 0.0 | 0.0 | 866.0 | 743.7 | 686.4 | 362.8 |
| Cost of product sales | | | | | 497.6 | 420.2 | 401.5 | |
| Maintenance and operations costs | | | | | 368.4 | 323.5 | 284.9 | |
| Gross profit | 0.0 | 0.0 | 0.0 | 0.0 | -315.5 | -272.7 | -253.7 | 38.0 |
| Gross margin | | | | | -57.3% | -57.9% | -58.6% | 9.5% |
| Selling, general and administrative [+] | 19.1 | 16.4 | 25.8 | 14.3 | 23.7 | 25.4 | 17.1 | 14.2 |
| General and administrative | 19.1 | 16.4 | 25.8 | 14.3 | 23.7 | 25.4 | 17.1 | 14.2 |
| Equity in earnings | | | | | | | | |
| Other operating expenses [+] | -75.9 | -16.4 | -46.9 | -51.6 | -451.1 | -388.5 | -371.6 | 43.3 |
| Exploration expenses | | | | | 3.5 | 5.1 | 5.4 | 4.3 |
| EBITDA [+] | | | 21.2 | 37.4 | 112.1 | 90.5 | 98.9 | 90.1 |
| EBITDA growth | | | -43.3% | | 23.9% | -8.5% | 9.7% | -100.2% |
| EBITDA margin | | | | | 20.4% | 19.2% | 22.9% | 22.5% |
| Depreciation | | | 21.2 | 37.4 | 96.8 | 71.5 | 98.8 | 109.7 |
| EBITA | 56.8 | 0.0 | 0.0 | 0.0 | 15.2 | 19.0 | 0.1 | -19.5 |
| EBITA margin | | | | | 2.8% | 4.0% | 0.0% | -4.9% |
| Amortization of intangibles | | | | | 2.1 | | | |
| EBIT [+] | 56.8 | 0.0 | 0.0 | 0.0 | 13.1 | 19.0 | 0.1 | -19.5 |
| EBIT growth | | | | | -30.9% | 13281.0% | -100.7% | -100.0% |
| EBIT margin | | | | | 2.4% | 4.0% | 0.0% | -4.9% |
| Non-recurring items [+] | 56.8 | | | | -6.0 | -1.4 | -1.2 | |
| Asset impairment | 56.8 | | | | | | | |
| Loss (gain) on disposal of assets | | | | | -31.6 | -1.4 | -1.2 | |
| Interest expense | | | | | 10.2 | 8.9 | 9.2 | 12.0 |
| Interest expense | | | | | 10.2 | 8.9 | 9.2 | 12.0 |
| Other income (expense), net [+] | | | | | -2.3 | -3.0 | -1.2 | 4.1 |
| Gain (loss) on sale of assets | | | | | | | | 0.3 |
| Gain (loss) on debt retirement | | | | | -0.6 | | | |
| Gain (loss) on derivative instruments | | | | | 0.2 | 19.3 | 0.9 | 3.5 |
| Gain (loss) on foreign currency transactions | | | | | 2.4 | 2.7 | 0.9 | -3.0 |
| Other | | | | | -0.5 | -0.2 | -0.4 | 1.1 |
| Pre-tax income | 0.0 | 0.0 | 0.0 | 0.0 | 6.6 | 8.5 | -9.1 | -27.4 |
| Income taxes | 0.0 | 0.0 | 0.0 | 0.0 | 16.8 | 11.0 | 5.5 | -18.5 |
| Tax rate | | | | | 254.7% | 129.5% | | 67.5% |
| Minority interest | | | | | -0.7 | -0.4 | -3.4 | 2.5 |
| Net income | 0.0 | 0.0 | 0.0 | 0.0 | -9.5 | -2.1 | -11.2 | -11.4 |
| Net margin | | | | | -1.7% | -0.4% | -2.6% | -2.9% |
| |
| Basic EPS [+] | | | | | ($0.04) | ($0.01) | ($0.04) | ($0.05) |
| Growth | | | | | 356.8% | -81.6% | -9.7% | -100.0% |
| Diluted EPS [+] | | | | | ($0.04) | ($0.01) | ($0.04) | ($0.05) |
| Growth | | | | | 356.8% | -81.6% | -9.7% | -100.0% |
| |
| Shares outstanding (basic) [+] | | | | | 258.9 | 258.6 | 258.0 | 237.2 |
| Growth | | | | | 0.1% | 0.2% | 8.8% | 0.6% |
| Shares outstanding (diluted) [+] | | | | | 258.9 | 258.6 | 258.0 | 237.2 |
| Growth | | | | | 0.1% | 0.2% | 8.8% | 0.6% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |