Derivative Instruments and Hedging Activities (Details 3) (Foreign Exchange Contracts [Member], Other income (expense) [Member], USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Foreign Exchange Contracts [Member] \| Other income (expense) [Member]
Impacts of foreign currency cash flow derivatives on results of operations and comprehensive income, pre-tax
Derivative Gain or (Loss) Recognized in OCI (Effective Portion)	$ (3)	$ 17	$ (14)	$ 5
Derivative Gain or (Loss) Reclassified from AOCI into Income (Effective Portion)	$ (2)	$ 17	$ (12)	$ 5

The income statement location of the effective portion of net gain or loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph b
-Clause 3

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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- Definition

Impacts of foreign currency cash flow derivatives on results of operations and comprehensive income, pre-tax.

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