Note 5 - Capital Stock (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended		10 Months Ended	1 Months Ended
	Jul. 23, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Oct. 27, 2011	Oct. 29, 2013 Subsequent Event [Member]
Note 5 - Capital Stock (Details) [Line Items]
Stock Repurchase Program, Authorized Amount (in Dollars)						$ 500
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars)		$ 388
Common Stock, Dividends, Per Share, Declared	$ 0.15	$ 0.15	$ 0.14	$ 0.30	$ 0.42		$ 0.15