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Note 7 - Summary of Other Long-term Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Summary Of Other Long Term Liabilities [Abstract]    
Workers compensation $ 103 $ 105
Asset retirement obligations 43 43
Deferred taxes 16 16
Environmental liabilities 12 12
Deferred consideration on disposed businesses 14 24
Embedded conversion features derivative liability 7 43
Other 29 25
Total $ 224 $ 268