Note 13 - Hedging Activities (Details) - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Derivatives designated as hedging instruments
Notional amount	$ 23,088	$ 14,399
Asset derivatives, fair value	592	995
Liability derivatives, fair value	(724)	(143)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Assets or Liabilities Current [Member]
Derivatives designated as hedging instruments
Notional amount	684	782
Asset derivatives, fair value		5
Liability derivatives, fair value	(26)	(10)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Assets or Liabilities Noncurrent [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value		1
Liability derivatives, fair value	(25)	(23)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Assets or Liabilities Noncurrent [Member]
Derivatives designated as hedging instruments
Notional amount	550	550
Asset derivatives, fair value	7
Liability derivatives, fair value		(4)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Assets or Liabilities Current [Member]
Derivatives designated as hedging instruments
Notional amount	1,063	1,095
Asset derivatives, fair value	6	6
Liability derivatives, fair value	(34)	(12)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Assets or Liabilities Noncurrent [Member]
Derivatives designated as hedging instruments
Liability derivatives, fair value	(1)
Not Designated as Hedging Instrument [Member] | Translated Earnings Contracts [Member] | Other Assets or Liabilities Current [Member]
Derivatives designated as hedging instruments
Notional amount	20,791	11,972
Asset derivatives, fair value	330	511
Liability derivatives, fair value	(52)	(33)
Not Designated as Hedging Instrument [Member] | Translated Earnings Contracts [Member] | Other Assets or Liabilities Noncurrent [Member]
Derivatives designated as hedging instruments
Asset derivatives, fair value	249	472
Liability derivatives, fair value	$ (586)	$ (61)