Note 14 - Other (Income) Charges, Net (Details) - USD ($) $ in Millions		3 Months Ended			12 Months Ended
		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Income And Expenses [Abstract]
Change in fair value of embedded conversion features derivative liability		$ (7)	$ (14)	$ (22)	$ (47)
Interest income					(4)	$ (3)	$ (1)
Loss on foreign exchange transactions	[1]				9	5	17
Other					5	2	5
Total					$ (37)	$ 4	$ 21

[1] Refer to Note 12, “Financial Instruments”.