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Note 16 - Financial Instruments (Details) - Financial Instruments Not Recorded at Fair Value - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Debt    
Short-term debt $ 4 $ 5
Financial liabilities, current 4 5
Long-term debt 670 672
Financial liabilities, non-current 685 681
Fair Value, Inputs, Level 2 [Member]    
Debt    
Short-term debt 4 5
Financial liabilities, current 4 5
Long-term debt 670 672
Financial liabilities, non-current $ 685 $ 681