Business Combinations, Intangibles and Goodwill - Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	$ 4,978	$ 4,412
Accumulated Amortization	(2,831)	(2,632)
Net Book Value	2,147	1,780
Purchased Technology
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	2,783	2,356
Accumulated Amortization	(1,546)	(1,429)
Net Book Value	1,237	927
Patents
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	225	225
Accumulated Amortization	(109)	(102)
Net Book Value	116	123
Software Licenses
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	104	101
Accumulated Amortization	(92)	(90)
Net Book Value	12	11
Trademarks And Tradenames
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	212	171
Accumulated Amortization	(127)	(118)
Net Book Value	85	53
Customer Relationships And Customer Lists
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	1,463	1,386
Accumulated Amortization	(914)	(855)
Net Book Value	549	531
Leasehold Interest
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	147	145
Accumulated Amortization	(13)	(11)
Net Book Value	134	134
Other Intangible Assets
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	44	28
Accumulated Amortization	(30)	(27)
Net Book Value	$ 14	$ 1