Note 15 - Hedging Activities (Details) - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivatives designated as hedging instruments
Notional amount	$ 15,198	$ 8,613
Asset derivatives, fair value	1,535	462
Liability derivatives, fair value	(59)	(37)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives designated as hedging instruments
Notional amount	487	433
Asset derivatives, fair value	22	8
Liability derivatives, fair value	(6)	(3)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives designated as hedging instruments
Notional amount	1,300	550
Asset derivatives, fair value	1
Liability derivatives, fair value	(15)	(28)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives designated as hedging instruments
Notional amount	1,285	804
Asset derivatives, fair value	17	20
Liability derivatives, fair value	(5)	(3)
Not Designated as Hedging Instrument [Member] | Translated Earnings Contracts [Member]
Derivatives designated as hedging instruments
Notional amount	12,126	6,826
Asset derivatives, fair value	649	344
Liability derivatives, fair value	(33)	(3)
Not Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value	$ 846	$ 90