Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Acquired intangible assets disclosures
Total gross carrying amount	$ 3,008	$ 3,047
Total accumulated amortization	(1,617)	(1,488)
Total finite-lived intangible assets - net	1,391	1,559
Non-amortizable intangible assets (primarily tradenames)	125	129
Total intangible assets - net	1,516	1,688
Customer related intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	1,375	1,411
Total accumulated amortization	(577)	(514)
Patents
Acquired intangible assets disclosures
Total gross carrying amount	590	602
Total accumulated amortization	(473)	(458)
Other technology-based intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	415	406
Total accumulated amortization	(210)	(179)
Definite-lived tradenames
Acquired intangible assets disclosures
Total gross carrying amount	405	411
Total accumulated amortization	(191)	(178)
Other amortizable intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	223	217
Total accumulated amortization	$ (166)	$ (159)