Note 20 - Incentive Plans (Details) - Stock Options - Activity (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Options - Activity [Abstract]
Options Outstanding	16,557,997	17,110,592	17,115,789
Options Outstanding (in Dollars per share)	$ 28.42	$ 28.14	$ 28.32
Options Outstanding (in Dollars)	$ 14.9	$ 8.0	$ 18.0
Options exercisable (fully vested)-
Balance	12,039,439	12,830,255	12,459,598
Balance (in Dollars per share)	$ 31.24	$ 31.57	$ 30.77
Balance (in Dollars)	8.2	7.7	3.9
Options Exercised	(1,636,300)	(1,495,432)	(444,368)
Options Exercised, Weighted-Average Exercise Price Per Share (in Dollars per share)	$ 23.15	$ 19.84	$ 14.71
Options Granted	1,354,250	1,522,450	1,888,017
Options Granted, Weighted-Average Exercise Price Per Share (in Dollars per share)	$ 21.55	$ 18.78	$ 18.77
Expired			(655,748)
Expired (in Dollars per share)			$ 16.40
Options Forfeited	(901,802)	(579,613)	(793,098)
Options Forfeited, Weighted-Average Exercise Price Per Share (in Dollars per share)	$ 31.38	$ 28.73	$ 23.74
Options Outstanding	15,374,145	16,557,997	17,110,592
Options Outstanding (in Dollars per share)	$ 28.79	$ 28.42	$ 28.14
Options Outstanding (in Dollars)	$ 13.1	$ 14.9	$ 8.0