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Note 7 - Summary of Other Long-term Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Summary Of Other Long Term Liabilities [Abstract]    
Workers compensation $ 105 $ 113
Asset retirement obligations 43 47
Series A preferred stock conversion option 43  
Contingent consideration related to the sale of a business 24 31
Deferred taxes 16 18
Environmental liabilities 12 13
Other 23 49
Total $ 266 $ 271