Note 11 - Stock Based Plans Stock Option Activity (Details) (Stock Options [Member], USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Stock Options [Member]
Stock Option Activity
Stock options outstanding, beginning of period	40
Granted and assumed	1
Exercised	(4)
Forfeited/expired/cancelled	(1)
Stock options outstanding, end of period	36
Weighted average exercise price of stock options granted, during period	$ 33.21
Weighted average grant date fair value of options granted, during period	$ 10.52