Note 13 - Hedging Activities (Details) - Effect on Consolidated Financial Statements - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Note 13 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income			$ 191	$ (139)
Undesignated [Member]
Note 13 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	$ 164	$ (137)	206	(143)
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Foreign Exchange Contracts, Balance Sheet [Member]
Note 13 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	2	7	13	(5)
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Foreign Exchange Contracts, Loans [Member]
Note 13 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income		(3)	2	1
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Translated Earnings Contracts [Member]
Note 13 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items]
Gain (loss) recognized in income	$ 162	$ (141)	$ 191	$ (139)