Note 13 - Hedging Activities (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	$ 23,088	$ 14,399
Not Designated as Hedging Instrument [Member] | Gross Notional Value, Translated Earnings Contracts [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	20,800	12,000
Not Designated as Hedging Instrument [Member] | Gross Notional Value, Collar Options [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	4,600	5,600
Not Designated as Hedging Instrument [Member] | Gross Notional Value, Foreign Exchange Forward [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	16,200	6,400
Not Designated as Hedging Instrument [Member] | Net Notional Value, Collar Options [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	$ 2,400	$ 2,900