Goodwill and Other Purchased Intangible Assets (Amortization of Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 59	$ 58
All Other
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	59	58
2014	168
2015	189
2016	159
2017	136
2018	115
Thereafter	294
Total	1,061
Cost of product revenue
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	50	43
2014	142
2015	175
2016	154
2017	133
2018	113
Thereafter	291
Total	1,008
Other operating expenses
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	9	15
2014	26
2015	14
2016	5
2017	3
2018	2
Thereafter	3
Total	$ 53