Note 24 - Financial Instruments (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Fair Value, Inputs, Level 2 [Member]
Long-term Debt, Fair Value	$ 119		$ 119		$ 111
Forward Contracts [Member]
Gross fair value of foreign currency in an asset position	1		1		1
Gross fair value of foreign currency in a liability position	0		0		0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivative Asset, Notional Amount	329		329		$ 332
Designated as Hedging Instrument [Member]
Derivatives Hedging Instruments	$ 0	$ 0	$ 0	$ 0