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Financial Instruments (Details 2) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Fair value of derivatives segregated between those derivatives that are designated as hedging instruments and those that are not designated as hedging instruments
Fair Value of Derivative, Asset	$ 557	$ 628
Fair Value of Derivative, Liability	68	61
Derivatives Not Designated as Hedging Instruments
U.S. Dollar Notional	$ 23,583	$ 20,446

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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