Business Combinations (Schedule Of Intangible Assets Acquired) (Details) (PopCap [Member], USD $) In Millions, unless otherwise specified	1 Months Ended
	Aug. 31, 2011 years
Business Acquisition [Line Items]
Gross Carrying Amount	$ 302
Weighted-Average Useful Life (in years)	6
Developed And Core Technology [Member]
Business Acquisition [Line Items]
Gross Carrying Amount	245
Weighted-Average Useful Life (in years)	6
Trade Names And Trademarks [Member]
Business Acquisition [Line Items]
Gross Carrying Amount	40
Weighted-Average Useful Life (in years)	9
In-Process Research And Development [Member]
Business Acquisition [Line Items]
Gross Carrying Amount	15
Weighted-Average Useful Life (in years)	5
Other Intangibles [Member]
Business Acquisition [Line Items]
Gross Carrying Amount	$ 2
Weighted-Average Useful Life (in years)	4