Note 13 - Hedging Activities - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions		Jun. 30, 2016	Dec. 31, 2015
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount	[1]	$ 584	$ 782
Asset derivatives, fair value	[1]	2	5
Liability derivatives, fair value	[1]	55	10
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount
Asset derivatives, fair value			1
Liability derivatives, fair value		(25)	(23)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount		717	1,095
Asset derivatives, fair value		3	6
Liability derivatives, fair value		(53)	(12)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount		550	550
Asset derivatives, fair value		10
Liability derivatives, fair value			(4)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount		19,128	11,972
Asset derivatives, fair value		98	511
Liability derivatives, fair value		(103)	(33)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount
Asset derivatives, fair value		67	472
Liability derivatives, fair value		(1,375)	(61)
Notional amount		20,979	14,399
Asset derivatives, fair value		180	995
Liability derivatives, fair value		$ 1,611	$ 143

[1] Cash flow hedges with a typical duration of 24 months or less.