Note 12 - Hedging Activities (Details) - Effect on Consolidated Financial Statements - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Note 12 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income			$ 42	$ 600
Undesignated [Member]
Note 12 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	$ (154)	$ 765	52	622
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Foreign Exchange Contracts, Balance Sheet [Member]
Note 12 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	(6)	21	7	16
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Foreign Exchange Contracts, Loans [Member]
Note 12 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	1	5	3	6
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Translated Earnings Contracts [Member]
Note 12 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	$ (149)	$ 739	$ 42	$ 600