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Objectives And Strategies For Using Derivatives (Classified by Risk) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets	$ 56	$ 61
Liabilities	74	120
Foreign Exchange Contracts [Member]
Assets	46	45
Liabilities	23	33
Interest Rate Contract [Member]
Assets	9	16
Liabilities	41	75
Commodity Contracts [Member]
Assets	1	0
Liabilities	$ 10	$ 12

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.

+ References+ Details