Financial Instruments, Foreign Exchange Risk Management (Details) - USD ($) $ in Millions		Sep. 30, 2015	Dec. 31, 2014
Foreign Exchange Contracts [Line Items]
Average Maturity of Foreign Exchange Hedging Contracts - within Three Months		69.00%
Average Maturity of Foreign Exchange Hedging Contracts - within Three and Six Months		10.00%
Average Maturity of Foreign Exchange Hedging Contracts - within Six and Twelve Months		21.00%
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		$ 3,265
Foreign Currency Cash Flow Hedges [Abstract]
Derivative Assets (Liabilities), at Fair Value, Net		26	$ (31)
Euro/U.K. Pound Sterling
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		771
U.S. Dollar/U.K. Pound Sterling
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		611
Japanese Yen/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		404
Canadian Dollar/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		279
U.S. Dollar/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		268
Japanese Yen/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		258
U.K. Pound Sterling/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		126
Swiss Franc/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		121
Euro/Canadian Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		73
Philippine Peso/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		50
Mexican Peso/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		43
Indian Rupee/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		39
Mexican Peso/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		28
U.S. Dollar/Canadian Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		27
Swedish Kroner/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		23
All Other
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value		144
Foreign Exchange Contract [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	14
Foreign Exchange Contract [Member] | Euro/U.K. Pound Sterling
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	14
Foreign Exchange Contract [Member] | U.S. Dollar/U.K. Pound Sterling
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	17
Foreign Exchange Contract [Member] | Japanese Yen/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	0
Foreign Exchange Contract [Member] | Canadian Dollar/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(16)
Foreign Exchange Contract [Member] | U.S. Dollar/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(2)
Foreign Exchange Contract [Member] | Japanese Yen/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	1
Foreign Exchange Contract [Member] | U.K. Pound Sterling/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(1)
Foreign Exchange Contract [Member] | Swiss Franc/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	1
Foreign Exchange Contract [Member] | Euro/Canadian Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	5
Foreign Exchange Contract [Member] | Philippine Peso/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(1)
Foreign Exchange Contract [Member] | Mexican Peso/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(2)
Foreign Exchange Contract [Member] | Indian Rupee/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(1)
Foreign Exchange Contract [Member] | Mexican Peso/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	(2)
Foreign Exchange Contract [Member] | U.S. Dollar/Canadian Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	0
Foreign Exchange Contract [Member] | Swedish Kroner/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	0
Foreign Exchange Contract [Member] | All Other
Summary of Foreign Exchange Hedging Positions [Abstract]
Fair Value Asset (Liability)	[1]	1
Designated as Hedging Instrument [Member]
Foreign Currency Cash Flow Hedges [Abstract]
Derivative Assets (Liabilities), at Fair Value, Net		$ 6	$ (30)

[1] Represents the net receivable (payable) amount included in the Condensed Consolidated Balance Sheet at September 30, 2015.