Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Acquired intangible assets disclosures
Total gross carrying amount	$ 4,274	$ 2,958
Total accumulated amortization	(1,758)	(1,646)
Total finite-lived intangible assets - net	2,516	1,312
Non-amortizable intangible assets (primarily tradenames)	116	123
Total intangible assets - net	2,632	1,435
Customer related intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	2,063	1,348
Total accumulated amortization	(659)	(597)
Patents
Acquired intangible assets disclosures
Total gross carrying amount	620	581
Total accumulated amortization	(477)	(472)
Other technology-based intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	527	407
Total accumulated amortization	(239)	(215)
Definite-lived tradenames
Acquired intangible assets disclosures
Total gross carrying amount	834	401
Total accumulated amortization	(214)	(195)
Other amortizable intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	230	221
Total accumulated amortization	$ (169)	$ (167)