Note 15 - Hedging Activities - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Notional amount	$ 18,609	$ 14,399
Asset derivatives, fair value	581	995
Liability derivatives, fair value	(370)	(143)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Notional amount	458	782
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Asset derivatives, fair value	1	5
Liability derivatives, fair value	(29)	(10)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Asset derivatives, fair value		1
Liability derivatives, fair value		(23)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Notional amount	890	1,095
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Asset derivatives, fair value	11	6
Liability derivatives, fair value	(7)	(12)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Notional amount	550	550
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Asset derivatives, fair value
Liability derivatives, fair value	(5)	(4)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member]
Notional amount	16,711	11,972
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Asset derivatives, fair value	423	511
Liability derivatives, fair value	(52)	(33)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Asset derivatives, fair value	146	472
Liability derivatives, fair value	$ (277)	$ (61)