| Dec 31,
2016 | Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 | Dec 31,
2024 |
|---|
| Cash and Cash Equivalents, at Carrying Value | 17 | 19 | 15 | 13 | 20 | 113 | 63 | 57 | 39 |
|---|
| Debt Securities, Trading, and Equity Securities, FV-NI | - | - | - | - | - | - | 12 | 133 | 81 |
|---|
| Receivables, Net, Current | - | - | - | - | - | 4 | 1 | 1 | 38 |
|---|
| Inventory, Current | - | - | - | - | 28 | 31 | 38 | 39 | 67 |
|---|
| Prepaid Expense, Current | 2 | 2 | 1 | 1 | 1 | 2 | 10 | 3 | 6 |
|---|
| Assets, Current, Total | 36 | 43 | 61 | 43 | 52 | 149 | 136 | 233 | 230 |
|---|
| Mineral Properties, Net | 93 | 84 | 84 | 84 | 84 | 84 | 84 | 120 | 278 |
|---|
| Property, Plant and Equipment, Net | 38 | 33 | 30 | 26 | 24 | 22 | 13 | 26 | 55 |
|---|
| Inventory, Noncurrent | - | - | 2 | 1 | 1 | 1 | 2 | 2 | - |
|---|
| Investments | - | - | - | - | - | 39 | 19 | 1 | 16 |
|---|
| Finite-Lived Intangible Assets, Net | - | - | - | - | - | - | - | - | 5 |
|---|
| Restricted Cash and Cash Equivalents, Noncurrent | 23 | 22 | 20 | 20 | 21 | 20 | 17 | 18 | 20 |
|---|
| Other Assets, Noncurrent | - | - | - | - | - | - | - | - | 8 |
|---|
| Assets, Total | 196 | 185 | 197 | 176 | 183 | 315 | 274 | 402 | 612 |
|---|
| Accounts Payable and Accrued Liabilities, Current | 6 | 6 | 8 | 5 | 3 | 6 | 7 | 10 | 32 |
|---|
| Asset Retirement Obligation, Current | 0 | 0 | 0 | 0 | 0 | 0 | - | - | 25 |
|---|
| Asset Acquisition, Contingent Consideration, Liability, Current | - | - | - | - | - | - | - | - | 2 |
|---|
| Other Liabilities, Current | - | - | - | - | - | - | - | - | 1 |
|---|
| Liabilities, Current, Total | 12 | 10 | 9 | 23 | 12 | 6 | 19 | 10 | 59 |
|---|
| Asset Retirement Obligations, Noncurrent | 17 | 18 | 19 | 19 | 13 | 14 | 10 | 11 | 20 |
|---|
| Contract with Customer, Liability | - | - | - | - | - | - | - | 0 | - |
|---|
| Other Liabilities, Noncurrent | - | - | - | - | - | - | - | - | 1 |
|---|
| Liabilities, Total | 59 | 58 | 52 | 45 | 26 | 20 | 30 | 23 | 80 |
|---|
| Common Stock, Value, Issued | 412 | 430 | 469 | 494 | 549 | 686 | 698 | 733 | 938 |
|---|
| Retained Earnings (Accumulated Deficit) | -282 | -309 | -332 | -370 | -398 | -396 | -456 | -356 | -404 |
|---|
| Accumulated Other Comprehensive Income (Loss), Net of Tax | 3 | 2 | 4 | 3 | 2 | 2 | -2 | -2 | -6 |
|---|
| Equity, Attributable to Parent, Total | 138 | 127 | 145 | 131 | 158 | 296 | 244 | 379 | 532 |
|---|
| Equity, Attributable to Noncontrolling Interest | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
|---|
| Equity, Including Portion Attributable to Noncontrolling Interest, Total | 138 | 127 | 145 | 131 | 158 | 296 | 244 | 379 | 532 |
|---|
| Liabilities and Equity, Total | 196 | 185 | 197 | 176 | 183 | 315 | 274 | 402 | 612 |
|---|