Goodwill and Other Intangible Assets (Acquisition-Related Intangible Assets that are being Amortized) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 8,707		$ 8,707		$ 8,653
Accumulated Amortization	4,684		4,684		4,046
Net Carrying Value	4,023		4,023		4,607
Patents and developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,595		6,595		6,547
Accumulated Amortization	3,037		3,037		2,513
Net Carrying Value	3,558		3,558		4,034
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,374		1,374		1,410
Accumulated Amortization	1,209		1,209		1,168
Net Carrying Value	165		165		242
Trade names and other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	738		738		696
Accumulated Amortization	438		438		365
Net Carrying Value	300		300		$ 331
Acquisition-related intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquisition-related intangible assets	$ 218	$ 285	$ 679	$ 821