Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Period Increase (Decrease)	$ (6)
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	23
Unrecognized Tax Benefits, Interest on Income Taxes Expense	$ 17

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

+ References

No definition available.

+ Details

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- Definition

Amount of interest expense for an underpayment of income taxes.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

+ Details

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- Definition

The net amount of all increases and decreases in unrecognized tax benefits for the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

+ Details

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