Business Combinations, Intangibles and Goodwill - Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	$ 4,668	$ 4,412
Accumulated Amortization	(2,727)	(2,632)
Net Book Value	1,941	1,780
Purchased Technology
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	2,476	2,356
Accumulated Amortization	(1,485)	(1,429)
Net Book Value	991	927
Patents
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	225	225
Accumulated Amortization	(106)	(102)
Net Book Value	119	123
Software Licenses
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	102	101
Accumulated Amortization	(91)	(90)
Net Book Value	11	11
Trademarks And Tradenames
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	212	171
Accumulated Amortization	(122)	(118)
Net Book Value	90	53
Customer Relationships And Customer Lists
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	1,463	1,386
Accumulated Amortization	(883)	(855)
Net Book Value	580	531
Leasehold Interest
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	147	145
Accumulated Amortization	(12)	(11)
Net Book Value	135	134
Other Intangible Assets
Schedule of Intangible Assets, Excluding Goodwill [Line Items]
Gross Carrying Amount	43	28
Accumulated Amortization	(28)	(27)
Net Book Value	$ 15	$ 1