Derivative Financial Instruments (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - Futures |
6 Months Ended |
---|---|
Jun. 30, 2019
T
| |
Aluminum | Long | |
Derivative [Line Items] | |
Commodity contract (in MT/Lbs) | 2,450 |
Aluminum | Short | |
Derivative [Line Items] | |
Commodity contract (in MT/Lbs) | 4,500 |
Copper | Long | |
Derivative [Line Items] | |
Commodity contract (in MT/Lbs) | 17,758 |
Copper | Short | |
Derivative [Line Items] | |
Commodity contract (in MT/Lbs) | 28,123 |