Note 4 - Goodwill and Intangible Assets Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Customer Lists and User Base	Dec. 31, 2012 Customer Lists and User Base	Mar. 31, 2013 Trademarks and Trade Names	Dec. 31, 2012 Trademarks and Trade Names	Mar. 31, 2013 Developed Technology	Dec. 31, 2012 Developed Technology	Mar. 31, 2013 All Other	Dec. 31, 2012 All Other
Intangible Assets:
Gross Carrying Amount	$ 3,140		$ 3,164	$ 1,632	$ 1,644	$ 726	$ 743	$ 525	$ 525	$ 257	$ 252
Accumulated Amortization	(2,117)		(2,036)	(1,037)	(991)	(581)	(569)	(338)	(322)	(161)	(154)
Net Carrying Amount	1,023		1,128	595	653	145	174	187	203	96	98
Weighted-Average Useful Life (Years)				5 years	5 years	5 years	5 years	4 years	4 years	4 years	4 years
Amortization expense	$ 108	$ 105