Financial Instruments, Foreign Exchange Risk Management (Details) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	$ 3,777
Fair Value Asset (Liability)	27	[1]
Foreign Currency Cash Flow Hedges [Abstract]
Net asset (Liability) fair value	30		18
Euro/U.K. Pound Sterling [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	782
Fair Value Asset (Liability)	(5)	[1]
U.S. Dollar/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	589
Fair Value Asset (Liability)	20	[1]
Japanese Yen/U.S. Dollar [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	501
Fair Value Asset (Liability)	13	[1]
Japanese Yen/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	347
Fair Value Asset (Liability)	21	[1]
Swiss Franc/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	236
Fair Value Asset (Liability)	(4)	[1]
U.K. Pound Sterling/U.S. Dollar [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	218
Fair Value Asset (Liability)	(5)	[1]
U.K. Pound Sterling/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	161
Fair Value Asset (Liability)	0	[1]
Canadian Dollar/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	146
Fair Value Asset (Liability)	(1)	[1]
Swedish Krona/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	96
Fair Value Asset (Liability)	(1)	[1]
U.K. Pound Sterling/Swiss Franc [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	76
Fair Value Asset (Liability)	0	[1]
Euro/U.S. Dollar [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	75
Fair Value Asset (Liability)	0	[1]
Mexican Peso/U.S. Dollar [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	68
Fair Value Asset (Liability)	(6)	[1]
Indian Rupee/U.S. Dollar [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	66
Fair Value Asset (Liability)	(3)	[1]
Danish Krone/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	63
Fair Value Asset (Liability)	0	[1]
U.S. Dollar/Japanese Yen [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	56
Fair Value Asset (Liability)	0	[1]
Norwegian Krone/Euro [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	55
Fair Value Asset (Liability)	(1)	[1]
All Other [Member]
Summary of Foreign Exchange Hedging Positions [Abstract]
Gross Notional Value	242
Fair Value Asset (Liability)	$ (1)	[1]

[1] Represents the net receivable (payable) amount included in the Condensed Consolidated Balance Sheet at September 30, 2011.