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Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Details) - Contracts not designated as hedging instruments | Jun. 30, 2021 USD ($) tons_per_month | Jun. 30, 2021 KRW (₩) tons_per_month | Jun. 30, 2021 EUR (€) tons_per_month
--- | --- | --- | ---
July 2021 - September 2021 |  |  |
Derivative [Line Items] |  |  |
Volume of Copper Derivatives (in metric tons per month) | 222 | 222 | 222
October 2021 - December 2021 |  |  |
Derivative [Line Items] |  |  |
Volume of Copper Derivatives (in metric tons per month) | 222 | 222 | 222
January 2022 - March 2022 |  |  |
Derivative [Line Items] |  |  |
Volume of Copper Derivatives (in metric tons per month) | 213 | 213 | 213
April 2022 - June 2022 |  |  |
Derivative [Line Items] |  |  |
Volume of Copper Derivatives (in metric tons per month) | 168 | 168 | 168
USD/CNH | Foreign Currency Derivatives |  |  |
Derivative [Line Items] |  |  |
Notional Values of Foreign Currency Derivatives | $ | $ 19,919,008 |  |
KRW/USD | Foreign Currency Derivatives |  |  |
Derivative [Line Items] |  |  |
Notional Values of Foreign Currency Derivatives | ₩ |  | ₩ 10,170,000,000 |
EUR/USD | Foreign Currency Derivatives |  |  |
Derivative [Line Items] |  |  |
Notional Values of Foreign Currency Derivatives | € |  |  | € 10,049,732

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