Note 14 - Other Charges (Income), Net (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income And Expenses [Abstract]
Change in fair value of embedded conversion features derivative liability	[1]	$ 4	$ (5)	$ 3	$ 2
Loss on foreign exchange transactions		3	2	4	11
Other		(1)	(1)
Total		$ 6	$ (4)	$ 7	$ 13

[1] Refer to Note 23, “Financial Instruments”.