Note 13 - Hedging Activities - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount	[1]	$ 527	$ 782
Asset derivatives, fair value	[1]	1	5
Liability derivatives, fair value	[1]	(54)	(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		(12)	(23)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount		759	1,095
Asset derivatives, fair value		2	6
Liability derivatives, fair value		(36)	(12)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount		550	550
Asset derivatives, fair value		7
Liability derivatives, fair value			(4)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount		17,595	11,972
Asset derivatives, fair value		66	511
Liability derivatives, fair value		(114)	(33)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount
Asset derivatives, fair value		27	472
Liability derivatives, fair value		(1,531)	(61)
Notional amount		19,431	14,399
Asset derivatives, fair value		103	995
Liability derivatives, fair value		$ (1,747)	$ (143)

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