Note 5 - Share-based Compensation (Details) - Stock Options (Employee Stock Option [Member], USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Stock Option [Member]
Note 5 - Share-based Compensation (Details) - Stock Options [Line Items]
Outstanding, Number of Shares	440	1,031	1,899	2,998
Outstanding, Weighted Average Exercise Price (in Dollars per share)	$ 19.08	$ 16.63	$ 14.65	$ 12.86
Outstanding, Weighted Average Remaining Contractual Term (in years)	1 year 244 days	2 years 127 days	3 years 3 days	3 years 200 days
Outstanding, Aggregate Intrinsic Value (in Dollars)	$ 25.6	$ 44.4	$ 57.8	$ 83.8
Exercisable	160
Exercisable (in Dollars per share)	$ 16.92
Exercisable	1 year 146 days
Exercisable (in Dollars)	9.7
Exercised, Number of Shares	(585)	(863)	(1,087)
Exercised, Weighted Average Exercise Price (in Dollars per share)	$ 14.77	$ 12.25	$ 9.68
Exercised, Aggregate Intrinsic Value (in Dollars)	$ 34.0	$ 36.8	$ 38.2
Forfeited, Number of Shares	(6)	(5)	(12)
Forfeited, Weighted Average Exercise Price (in Dollars per share)	$ 19.89	$ 18.84	$ 18.29