Derivatives and Hedging Activities (Schedule of Notional Amounts of Financial Instruments) (Details) In Millions, unless otherwise specified	Dec. 31, 2014 Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell US Dollar For Brazilian Real [Member] Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2013 Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell US Dollar For Brazilian Real [Member] Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell Indian Rupee For US Dollar [Member] Not Designated as Hedging Instrument [Member] INR	Dec. 31, 2013 Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell Indian Rupee For US Dollar [Member] Not Designated as Hedging Instrument [Member] INR	Dec. 31, 2014 Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell Mexican Peso for US Dollar [Member] Not Designated as Hedging Instrument [Member] MXN	Dec. 31, 2013 Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell Mexican Peso for US Dollar [Member] Not Designated as Hedging Instrument [Member] MXN	Dec. 31, 2014 Cash Flow Hedging [Member] Zero Cost Collar Derivative [Member] Zero Cost Collar To Sell US Dollar For Brazilian Real [Member] Designated as Hedging Instrument [Member] USD ($)		Dec. 31, 2013 Cash Flow Hedging [Member] Zero Cost Collar Derivative [Member] Zero Cost Collar To Sell US Dollar For Brazilian Real [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2014 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] BRL		Dec. 31, 2013 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] BRL	Dec. 31, 2014 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell British Pounds For Brazilian Real [Member] Designated as Hedging Instrument [Member] GBP (£)		Dec. 31, 2013 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell British Pounds For Brazilian Real [Member] Designated as Hedging Instrument [Member] GBP (£)	Dec. 31, 2014 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell European Euro For Brazilian Real [Member] Designated as Hedging Instrument [Member] EUR (€)		Dec. 31, 2013 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell European Euro For Brazilian Real [Member] Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2014 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell European Euro For Polish Zloty [Member] Designated as Hedging Instrument [Member] EUR (€)		Dec. 31, 2013 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell European Euro For Polish Zloty [Member] Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2014 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell US Dollar For Brazilian Real [Member] Designated as Hedging Instrument [Member] USD ($)		Dec. 31, 2013 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Foreign Exchange Contracts To Sell US Dollar For Brazilian Real [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Fair Value Hedging [Member] Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2013 Fair Value Hedging [Member] Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)
Derivative [Line Items]
Derivative Notional Amount	$ 11	$ 0	43	157	187	0	$ 0	[1]	$ 18	166	[1]	502	£ 5	[1]	£ 17	€ 9	[1]	€ 27	€ 280	[1]	€ 252	$ 125	[1]	$ 290	$ 230	$ 175

[1] These contracts had maturities of three years or less as of December 31, 2014.