Note 13 - Hedging Activities (Details) - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivatives designated as hedging instruments
Notional amount	$ 17,270	$ 15,198
Asset derivatives, fair value	1,485	1,535
Liability derivatives, fair value	(108)	(59)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives designated as hedging instruments
Notional amount	742	487
Asset derivatives, fair value	34	22
Liability derivatives, fair value	(6)	(6)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives designated as hedging instruments
Notional amount	1,300	1,300
Asset derivatives, fair value		1
Liability derivatives, fair value	(10)	(15)
Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value	8
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives designated as hedging instruments
Notional amount	564	1,285
Asset derivatives, fair value	14	17
Liability derivatives, fair value	(5)	(5)
Not Designated as Hedging Instrument [Member] | Translated Earnings Contracts [Member]
Derivatives designated as hedging instruments
Notional amount	14,664	12,126
Asset derivatives, fair value	618	649
Liability derivatives, fair value	(32)	(33)
Not Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value	811	846
Liability derivatives, fair value	$ (55)