Note 13 - Hedging Activities (Details) - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Derivatives designated as hedging instruments
Notional amount	$ 14,904	$ 15,198
Asset derivatives, fair value	1,441	1,535
Liability derivatives, fair value	(85)	(59)
Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value	9
Liability derivatives, fair value	(1)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives designated as hedging instruments
Notional amount	674	487
Asset derivatives, fair value	31	22
Liability derivatives, fair value	(5)	(6)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives designated as hedging instruments
Notional amount	550	1,300
Asset derivatives, fair value		1
Liability derivatives, fair value	(8)	(15)
Not Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value	763	846
Liability derivatives, fair value	(38)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives designated as hedging instruments
Notional amount	444	1,285
Asset derivatives, fair value	2	17
Liability derivatives, fair value	(4)	(5)
Not Designated as Hedging Instrument [Member] | Translated Earnings Contracts [Member]
Derivatives designated as hedging instruments
Notional amount	13,236	12,126
Asset derivatives, fair value	636	649
Liability derivatives, fair value	$ (29)	$ (33)