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Note 7 - Other Long-term Liabilities (Details) - Summary of Other Long-term Liabilities - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Sep. 03, 2013
Summary of Other Long-term Liabilities [Abstract]      
Workers compensation $ 113 $ 123  
Environmental liabilities 13 19  
Asset retirement obligations 47 53  
Other 105 129  
Total $ 278 $ 324 $ 18