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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,218		$ 6,218		$ 6,357
Accumulated Amortization	3,335		3,335		3,050
Net Carrying Amount	2,883		2,883		3,307
Patents and developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,312		5,312		5,542
Accumulated Amortization	2,931		2,931		2,710
Net Carrying Amount	2,381		2,381		2,832
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	358		358		352
Accumulated Amortization	246		246		197
Net Carrying Amount	112		112		155
Trade names and other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	548		548		463
Accumulated Amortization	158		158		143
Net Carrying Amount	390		390		$ 320
Acquisition-related intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquisition-related intangible assets	$ 194	$ 203	$ 600	$ 629