Note 3 - Available-for-Sale Investments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Available For Sale Investments [Abstract]
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	$ 38	[1]
Marketable Securities, Realized Loss, Other than Temporary Impairments, Amount	6		9
Proceeds from Sale of Short-term Investments	$ 2,026		$ 2,269	$ 3,171

[1] Included in the maturity table is $38 million of asset-based securities that mature over time and are being reported at their final maturity dates.