Derivative Financial Instruments (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details)	12 Months Ended
Dec. 31, 2016 T
Aluminum \| Long
Derivative [Line Items]
Commodity contract (in MT/Lbs)	2,125
Aluminum \| Short
Derivative [Line Items]
Commodity contract (in MT/Lbs)	2,925
Copper \| Long
Derivative [Line Items]
Commodity contract (in MT/Lbs)	9,109
Copper \| Short
Derivative [Line Items]
Commodity contract (in MT/Lbs)	13,745

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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