Derivative Financial Instruments (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - Futures	3 Months Ended
Mar. 31, 2020 T
Aluminum \| Long
Derivative [Line Items]
Commodity contract (in MT/Lbs)	1,425
Aluminum \| Short
Derivative [Line Items]
Commodity contract (in MT/Lbs)	4,475
Copper \| Long
Derivative [Line Items]
Commodity contract (in MT/Lbs)	8,766
Copper \| Short
Derivative [Line Items]
Commodity contract (in MT/Lbs)	13,562

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.

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