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Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Details) - Contracts not designated as hedging instruments
Sep. 30, 2021
USD ($)
tons_per_month
Sep. 30, 2021
EUR (€)
tons_per_month
Sep. 30, 2021
KRW (₩)
tons_per_month
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
July 2022 - September 2022      
Derivative [Line Items]      
Volume of Copper Derivatives (in metric tons per month) 69 69 69
USD/CNH | Foreign Currency Derivatives      
Derivative [Line Items]      
Notional Values of Foreign Currency Derivatives | $ $ 20,063,054    
EUR/USD | Foreign Currency Derivatives      
Derivative [Line Items]      
Notional Values of Foreign Currency Derivatives | €   € 12,838,469  
KRW/USD | Foreign Currency Derivatives      
Derivative [Line Items]      
Notional Values of Foreign Currency Derivatives | ₩     ₩ 9,459,360,000