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Note 16 - Financial Instruments (Details) - Foreign Exchange Gain (Loss) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Other Charges, Net [Member]        
Note 16 - Financial Instruments (Details) - Foreign Exchange Gain (Loss) [Line Items]        
Foreign exchange losses, net $ (2) $ (1) $ (11) $ (3)