Note 21 - Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended December 31,
	2012			2011			2010
Weighted average fair value of options granted	$	4.52		$	4.39		$	3.82
Weighted average risk-free interest rates		1.04	%		2.02	%		2.40	%
Weighted average expected option lives (in years)		6.25			6.25			6.25
Weighted average expected volatility		37.53	%		36.82	%		37.98	%
Weighted average expected dividend yield		3.94	%		3.98	%		4.21	%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Shares			Weighted- Average Exercise Price Per Share		Aggregate Intrinsic Value (in millions)
Options outstanding, January 1, 2010		17,560,921		$	29.69	$	3.4
Exercised		(616,245	)	$	13.73
Granted		1,776,175		$	15.63
Forfeited		(1,605,062	)	$	33.68
Options outstanding, December 31, 2010		17,115,789		$	28.32	$	18.0
Exercised		(444,368	)	$	14.71
Granted		1,888,017		$	18.77
Expired		(655,748	)	$	16.40
Forfeited		(793,098	)	$	23.74
Options outstanding, December 31, 2011		17,110,592		$	28.14	$	8.0
Exercised		(1,495,432	)	$	19.84
Granted		1,522,450		$	18.78
Forfeited		(579,613	)	$	28.73
Options outstanding, December 31, 2012		16,557,997		$	28.42	$	14.9
Options exercisable (fully vested)-
December 31, 2010		11,712,900		$	29.74	$	5.8
December 31, 2011		12,459,598		$	30.77	$	3.9
December 31, 2012		12,830,255		$	31.57	$	7.7