Note 4 - Goodwill and Intangible Assets Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Customer Lists and User Base	Dec. 31, 2012 Customer Lists and User Base	Jun. 30, 2013 Trademarks and Trade Names	Dec. 31, 2012 Trademarks and Trade Names	Jun. 30, 2013 Developed Technology	Dec. 31, 2012 Developed Technology	Jun. 30, 2013 All Other	Dec. 31, 2012 All Other
Intangible Assets:
Gross Carrying Amount	$ 3,138		$ 3,138		$ 3,164	$ 1,631	$ 1,644	$ 717	$ 743	$ 525	$ 525	$ 265	$ 252
Accumulated Amortization	(2,212)		(2,212)		(2,036)	(1,088)	(991)	(600)	(569)	(356)	(322)	(168)	(154)
Net Carrying Amount	926		926		1,128	543	653	117	174	169	203	97	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	$ 109	$ 216	$ 218