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Note 5 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Asset Based Revolving Credit [Member]    
Guarantor Obligations, Maximum Exposure, Undiscounted $ 118  
Bank Guarantees and Letters of Credit [Member]    
Guarantor Obligations, Maximum Exposure, Undiscounted 4  
Surety Bond [Member]    
Guarantor Obligations, Maximum Exposure, Undiscounted 17  
Restricted Cash Deposits [Member]    
Guarantor Obligations, Maximum Exposure, Undiscounted (68)  
Federal and State Value added Taxes Litigations [Member]    
Loss Contingency, Estimate of Possible Loss 52  
Threat of Expropriation of Assets [Member] | Cash [Member] | BRAZIL    
Restricted Cash and Cash Equivalents, Noncurrent 6  
Threat of Expropriation of Assets [Member] | BRAZIL    
Assets, Noncurrent 66  
Restricted Cash and Cash Equivalents, Noncurrent $ 53 $ 43