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Note 11 - Other Charges (Income), Net (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Other Income And Expenses [Abstract]        
Change in fair value of embedded conversion features derivative liability [1] $ (7) $ (14) $ 7 $ (36)
Loss on foreign exchange transactions 7 3 9 4
Other 1 2 1 3
Total $ 1 $ (9) $ 17 $ (29)
[1] Refer to Note 21, “Financial Instruments”.