Note 3 - Business Combinations Other (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	3 Months Ended		0 Months Ended		3 Months Ended
	Sep. 30, 2011 years acquisitions segments	Sep. 30, 2011 Marketplaces [Member] Other acquisitions	Sep. 30, 2011 Payments [Member] Other acquisitions	Aug. 16, 2011 Magento [Member]	Aug. 15, 2011 Magento [Member]	Sep. 30, 2011 Other acquisitions
Business Acquisition [Line Items]
Effective date of acquisition				August 16, 2011
Step acquisition previously held equity interest in acquiree					49.90%
Percentage of voting interests acquired				100.00%
Step acquisition in acquiree, remeasurement gain				$ 56.3
Number of businesses acquired	10	2	3			5