Goodwill and Other Intangible Assets (Acquisition-Related Intangible Assets that are being Amortized) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,357	$ 8,730
Accumulated Amortization	3,050	4,883
Net Carrying Amount	3,307	3,847
Patents and developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,542	6,592
Accumulated Amortization	2,710	3,213
Net Carrying Amount	2,832	3,379
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	352	1,343
Accumulated Amortization	197	1,201
Net Carrying Amount	155	142
Trade names and other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	463	795
Accumulated Amortization	143	469
Net Carrying Amount	$ 320	$ 326