Business Combinations (Details 2) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Business Acquisition [Line Items]
Purchased intangible assets	1,782
Minimum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	1 year
Maximum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	14 years
Developed technology [Member]
Business Acquisition [Line Items]
Purchased intangible assets	1,288
Developed technology [Member] | Minimum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	1 year
Developed technology [Member] | Maximum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	14 years
In-process research and development [Member]
Business Acquisition [Line Items]
Purchased intangible assets	267
In-process research and development [Member] | Minimum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	10 years
In-process research and development [Member] | Maximum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	13 years
Customer relationships [Member]
Business Acquisition [Line Items]
Purchased intangible assets	212
Customer relationships [Member] | Minimum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	1 year
Customer relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	5 years
Other [Member]
Business Acquisition [Line Items]
Purchased intangible assets	15
Other [Member] | Minimum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	1 year
Other [Member] | Maximum [Member]
Business Acquisition [Line Items]
Intangible assets, useful Life	8 years