Fair Value of Financial Instruments (Unaudited) (Details 2) lb in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) lb	Dec. 31, 2018 USD ($)
Copper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb	19
Zinc [Member] [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb	7
Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Notional Amount | $	$ 111	$ 114
Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Notional Amount | $	$ 12	$ 0