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Hedging Transactions and Derivative Financial Instruments (Volume of Copper Derivatives) (Details) - Designated as Hedging Instrument | Dec. 31, 2019 T / mo
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April 2020 - June 2020 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Volume of copper derivatives | 202
July 2020 - September 2020 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Volume of copper derivatives | 202
October 2020 - December 2020 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Volume of copper derivatives | 201
January 2021 - March 2021 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Volume of copper derivatives | 201
January 2021 - March 2021 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Volume of copper derivatives | 256

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Nominal number of units used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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