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Note 11 - Other Charges (Income), Net (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Other Income And Expenses [Abstract]    
Change in fair value of embedded conversion features derivative liability [1] $ 14 $ (22)
Loss on foreign exchange transactions 2 1
Other   1
Total $ 16 $ (20)
[1] Refer to Note 21, “Financial Instruments”.