Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Acquired intangible assets disclosures
Total gross carrying amount	$ 2,958	$ 3,047
Total accumulated amortization	(1,646)	(1,488)
Total finite-lived intangible assets - net	1,312us-gaap_FiniteLivedIntangibleAssetsNet	1,559us-gaap_FiniteLivedIntangibleAssetsNet
Non-amortizable intangible assets (primarily tradenames)	123us-gaap_IndefiniteLivedTradeNames	129us-gaap_IndefiniteLivedTradeNames
Total intangible assets - net	1,435	1,688
Purchased finite-lived intangible assets	34		213
Customer related intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	1,348	1,411
Total accumulated amortization	(597)	(514)
Patents
Acquired intangible assets disclosures
Total gross carrying amount	581	602
Total accumulated amortization	(472)	(458)
Other technology-based intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	407	406
Total accumulated amortization	(215)	(179)
Definite-lived tradenames
Acquired intangible assets disclosures
Total gross carrying amount	401	411
Total accumulated amortization	(195)	(178)
Other amortizable intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	221	217
Total accumulated amortization	$ (167)	$ (159)

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The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

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-Publisher FASB

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

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-Publisher FASB

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

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

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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