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Goodwill and Other Intangible Assets, net (Other Intangible Assets Disclosure) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Goodwill and Intangible Assets Disclosure [Abstract] |  |
Indefinite-lived intangible assets | $ 11,711 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill | $ 11,701 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Definite-lived intangible assets | 465 us-gaap_FiniteLivedIntangibleAssetsGross | 464 us-gaap_FiniteLivedIntangibleAssetsGross
Definite-lived intangible assets, accumulated amortization | 127 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | 107 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Total other intangible assets | $ 12,176 us-gaap_IntangibleAssetsGrossExcludingGoodwill | $ 12,165 us-gaap_IntangibleAssetsGrossExcludingGoodwill

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- Definition 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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Namespace Prefix: | us-gaap_
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Period Type: | instant

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- Definition Amount before 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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- Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + 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 (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Period Type: | instant

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- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. + References No definition available. + Details
Name: | us-gaap_IntangibleAssetsGrossExcludingGoodwill
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