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Write-Downs (Notes) | 12 Months Ended
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Dec. 31, 2020
Impairment or Disposal of Tangible Assets Disclosure [Abstract] |
Asset Impairment Charges [Text Block] | IMPAIRMENT OF LONG-LIVED ASSETSIn 2019, the Company performed a comprehensive analysis of its Silvertip property and determined that indicators of impairment existed, primarily as a result of further deterioration in zinc and lead market conditions as well as processing facility-related challenges. As a result, a non-cash impairment charge of $250.8 million was recorded during the in 2019. The write-down was allocated between Property, plant and equipment, net, Mining properties, net and Other non-current assets, $43.6 million, $201.5 million and $5.7 million, respectively. See Note 16 -- Fair Value Measurements for additional detail of the assumptions used in the determination of the fair value of the long-lived assets tested for impairment.

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- Definition The entire disclosure for the details of the charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value. Disclosure may also include a description of the impaired asset and facts and circumstances leading to the impairment, amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired asset is reported. + References No definition available. + Details
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