Derivatives and Hedging Activities (Schedule of Notional Amounts of Financial Instruments) (Details) € in Millions, ₨ in Millions, £ in Millions, MXN in Millions, MWh in Millions, BRL in Millions, $ in Millions	Dec. 31, 2015 USD ($) MWh		Dec. 31, 2015 BRL MWh		Dec. 31, 2015 GBP (£) MWh		Dec. 31, 2015 EUR (€) MWh		Dec. 31, 2015 INR (₨) MWh	Dec. 31, 2015 MXN MWh		Dec. 31, 2014 USD ($) MWh	Dec. 31, 2014 BRL MWh	Dec. 31, 2014 GBP (£) MWh	Dec. 31, 2014 EUR (€) MWh	Dec. 31, 2014 INR (₨) MWh	Dec. 31, 2014 MXN MWh
Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell US Dollar For Brazilian Real [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 0											$ 11
Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell European Euro For British Pounds [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | €							€ 25								€ 0
Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell Indian Rupee For US Dollar [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | ₨									₨ 49							₨ 43
Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell Mexican Peso for US Dollar [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | MXN										MXN 131							MXN 187
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 38											$ 0
Energy Related Derivative [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Electricity Contract Notional | MWh	1		1		1		1		1	1		0	0	0	0	0	0
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell Brazilian Real For U S Dollar [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | BRL			BRL 0	[1]									BRL 166
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell British Pounds For Brazilian Real [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | £					£ 0	[1]								£ 5
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell European Euro For Brazilian Real [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | €							€ 0	[1]							€ 9
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell European Euro For Polish Zloty [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | €							€ 260	[1]							€ 280
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell US Dollar For Brazilian Real [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 0	[1]										$ 125
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Foreign Exchange Contracts To Sell Mexican Peso for US Dollar [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount | MXN										MXN 136	[1]						MXN 0
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 17											$ 230

[1] These contracts had maturities of three years or less as of December 31, 2015.