Note 24 - Financial Instruments (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Fair Value, Inputs, Level 2 [Member]
Long-term Debt, Fair Value	$ 105		$ 105		$ 5
Fair value of current portion of long-term debt					378
Forward Contracts [Member]
Gross fair value of foreign currency in an asset position	0		0		3
Gross fair value of foreign currency in a liability position	1		1		1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivative Asset, Notional Amount	376		376		$ 415
Designated as Hedging Instrument [Member]
Derivatives Hedging Instruments	$ 0	$ 0	$ 0	$ 0