Financial Instruments, Foreign Exchange Risk Management (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Foreign Exchange Contracts [Line Items]
Average Maturity of Foreign Exchange Hedging Contracts - within Three Months	68.00%
Average Maturity of Foreign Exchange Hedging Contracts - within Three and Six Months	9.00%
Average Maturity of Foreign Exchange Hedging Contracts - within Six and Twelve Months	23.00%
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	$ 2,994
Fair Value Asset (Liability)	(25)	[1]
Foreign Currency Cash Flow Hedges [Abstract]
Net liability fair value	(16)		(50)
Euro/U.K. Pound Sterling
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	769
Fair Value Asset (Liability)	(4)	[1]
Japanese Yen/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	487
Fair Value Asset (Liability)	(8)	[1]
Canadian Dollar/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	409
Fair Value Asset (Liability)	(4)
U.S. Dollar/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	397
Fair Value Asset (Liability)	(1)	[1]
Japanese Yen/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	378
Fair Value Asset (Liability)	(11)	[1]
U.K. Pound Sterling/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	167
Fair Value Asset (Liability)	0	[1]
Philippine Peso/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	52
Fair Value Asset (Liability)	0	[1]
Mexican Peso/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	47
Fair Value Asset (Liability)	1	[1]
Swiss Franc/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	44
Fair Value Asset (Liability)	0
Indian Rupee/U.S. Dollar
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	41
Fair Value Asset (Liability)	3	[1]
Euro/Danish Krone
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	29
Fair Value Asset (Liability)	0	[1]
Mexican Peso/Euro
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	24
Fair Value Asset (Liability)	0
All Other
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	150
Fair Value Asset (Liability)	$ (1)	[1]

[1] (1)Represents the net receivable (payable) amount included in the Condensed Consolidated Balance Sheet at March 31, 2014.