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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

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