Note 10 - Stock Repurchase Programs (Details) (USD $) Share data in Thousands, except Per Share data	9 Months Ended			12 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Stock Repurchase Programs [Member]	Dec. 31, 2010 Stock Repurchase Programs [Member]	Sep. 30, 2011 Stock Repurchase Program 2010 [Member]
Equity, Class of Treasury Stock [Line Items]
Amount authorized under stock repurchase program					$ 2,000,000,000
Treasury stock acquired under stock repurchase program, average price per share	$ 31.65		$ 31.78	$ 29.94
Shares Repurchased [Abstract]
Shares repurchased, beginning balance			1,880
Shares repurchased			25,600
Shares repurchased, ending balance	27,480			1,880
Stock Repurchased Value [Roll Forward]
Treasury Stock Value of Shares Repurchased			56,293,000
Repurchase of common stock			813,491,000
Treasury Stock Value of Shares Repurchased	869,784,000			56,293,000
Stock Repurchase Remaining Authorized Amount [Roll Forward]
Stock Repurchase remaining amount authorized, beginning balance	1,130,216,000			1,943,707,000
Repurchases of common stock	(814,132,000)	(297,662,000)	(813,491,000)
Stock Repurchase remaining amount authorized, ending balance	$ 1,130,216,000			$ 1,943,707,000
Repurchased shares retired during period	0