Financial Instruments (Hedging Activity Reported in Accumulated Other Comprehensive Earnings (Losses) Net of Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Hedging Activity, Affecting Accumulated Other Comprehensive Income [Roll Forward]
Gain at beginning of period			$ 63
Gains transferred to earnings	(6)	(64)	(13)	(95)
Change in fair value	(11)	60	(35)	156
Gain as of June 30,	15	153	15	153
Foreign Exchange Contract [Member]
Hedging Activity, Affecting Accumulated Other Comprehensive Income [Roll Forward]
Derivative Instruments, gains to be reclassified to earnings.	19		19
Foreign Exchange Contract [Member] \| Other Comprehensive Income (Loss) [Member]
Hedging Activity, Affecting Accumulated Other Comprehensive Income [Roll Forward]
Gain at beginning of period	32	157	63	92
Gains transferred to earnings	(6)	(64)	(13)	(95)
Change in fair value	(11)	60	(35)	156
Gain as of June 30,	$ 15	$ 153	$ 15	$ 153

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

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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.

+ References

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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