Intangibles and Goodwill - Intangible Assets, Excluding Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,584	$ 5,163
Accumulated Amortization	(3,435)	(3,038)
Net Book Value	2,149	2,125
Purchased technology
Intangible Assets [Line Items]
Gross Carrying Amount	3,272	2,935
Accumulated Amortization	(1,903)	(1,668)
Net Book Value	1,369	1,267
Patents
Intangible Assets [Line Items]
Gross Carrying Amount	225	225
Accumulated Amortization	(132)	(117)
Net Book Value	93	108
Software licenses
Intangible Assets [Line Items]
Gross Carrying Amount	112	108
Accumulated Amortization	(94)	(93)
Net Book Value	18	15
Trademarks and tradenames
Intangible Assets [Line Items]
Gross Carrying Amount	254	226
Accumulated Amortization	(157)	(136)
Net Book Value	97	90
Customer relationships and customer lists
Intangible Assets [Line Items]
Gross Carrying Amount	1,523	1,473
Accumulated Amortization	(1,087)	(974)
Net Book Value	436	499
Leasehold interest
Intangible Assets [Line Items]
Gross Carrying Amount	152	152
Accumulated Amortization	(20)	(16)
Net Book Value	132	136
Other
Intangible Assets [Line Items]
Gross Carrying Amount	46	44
Accumulated Amortization	(42)	(34)
Net Book Value	$ 4	$ 10