Other Assets (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Components of other intangible assets
Gross Carrying Amount	$ 1,566	$ 1,666
Accumulated Amortization	(749)	(673)
Net Carrying Amount	817	993
Other Contracts [Member]
Components of other intangible assets
Gross Carrying Amount	269	428
Accumulated Amortization	(89)	(147)
Net Carrying Amount	180	281
Customer Relationships [Member]
Components of other intangible assets
Gross Carrying Amount	1,297	1,238
Accumulated Amortization	(660)	(526)
Net Carrying Amount	$ 637	$ 712

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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