Note 13 - Hedging Activities (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Billions	Jun. 30, 2015	Dec. 31, 2014
Gross Notional Value [Member] | Translated Earnings Contracts [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	$ 13.2	$ 12.1
Gross Notional Value [Member] | Collar Options [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	5.3	2.3
Gross Notional Value [Member] | Foreign Exchange Forward [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	7.9	9.8
Net Notional Value [Member] | Collar Options [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	$ 2.8	$ 1.2