Note 12 - Stockholders' Equity (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stockholders' Equity Note [Abstract]
Authorized shares for repurchase	193,000,000
Shares of common stock repurchased	183,100,000
Aggregate cost of common stock repurchased	$ 3,900,000,000
Remaining shares authorized for repurchase	9,900,000
Shares repurchased	4,800,000	0	0
Cost of shares repurchased	$ 197,023,000
Average price per share	$ 41.05