Note 21 - Incentive Plans (Detail) - Stock Options - Activity (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Options outstanding, January 1, 2010	17,110,592	17,115,789	17,560,921
Options outstanding, January 1, 2010 (in Dollars per share)	$ 28.14	$ 28.32	$ 29.69
Options outstanding, January 1, 2010 (in Dollars)	$ 8.0	$ 18.0	$ 3.4
Options Exercised	(1,495,432)	(444,368)	(616,245)
Options Exercised, Weighted-Average Exercise Price Per Share (in Dollars per share)	$ 19.84	$ 14.71	$ 13.73
Options Granted	1,522,450	1,888,017	1,776,175
Options Granted, Weighted-Average Exercise Price Per Share (in Dollars per share)	$ 18.78	$ 18.77	$ 15.63
Expired		(655,748)
Expired (in Dollars per share)		$ 16.40
Options Forfeited	(579,613)	(793,098)	(1,605,062)
Options Forfeited, Weighted-Average Exercise Price Per Share (in Dollars per share)	$ 28.73	$ 23.74	$ 33.68
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	12,830,255	12,459,598	11,712,900
Balance (in Dollars per share)	$ 31.57	$ 30.77	$ 29.74
Balance (in Dollars)	$ 7.7	$ 3.9	$ 5.8