Note 13 - Hedging Activities (Details) (Not Designated as Hedging Instrument [Member], USD $) In Billions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Gross Notional Value [Member] | Translated Earnings Contracts [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	$ 14.7	$ 12.1
Gross Notional Value [Member] | Collar Options [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	5.8	2.3
Gross Notional Value [Member] | Foreign Exchange Forward [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	8.9	9.8
Net Notional Value [Member] | Collar Options [Member]
Note 13 - Hedging Activities (Details) [Line Items]
Derivative, Notional Amount	$ 3.0	$ 1.2