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Note 8 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Jul. 28, 2020
Restricted Cash, Total $ 64    
U S International Development Finance Corporation [Member]      
Line of Credit Facility, Maximum Borrowing Capacity     $ 765
BRAZIL      
Restricted Cash and Investments, Noncurrent, Total 6 $ 3  
Federal And State Value Added Taxes Litigations And Civil Litigation And Disputes With Former Employees [Member]      
Loss Contingency Accrual, Provision 2    
Federal And State Value Added Taxes Litigations And Civil Litigation And Disputes With Former Employees [Member] | BRAZIL      
Aggregate Claims 116    
Loss Contingency, Estimate of Possible Loss 5    
Threat of Expropriation of Assets [Member] | BRAZIL      
Restricted Cash and Investments, Noncurrent, Total 6    
Assets, Noncurrent, Total 41    
Bank Guarantees And Letters Of Credit [Member]      
Guarantor Obligations, Maximum Exposure, Undiscounted 2    
Surety Bond [Member]      
Guarantor Obligations, Maximum Exposure, Undiscounted 29    
Amended A B L Credit Agreement [Member]      
Long-Term Line of Credit, Total 51    
L C Facility Agreement [Member]      
Long-Term Line of Credit, Total $ 43