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Note 2 - Cash, Cash Equivalents and Restricted Cash (Details Textual) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Cash Collateralized Letter Of Credit Facility [Member]    
Cash and Cash Equivalents [Line Items]    
Restricted Cash and Investments, Noncurrent $ 26 $ 25
Cash Collateralized for Workers Compensation Obligations [Member]    
Cash and Cash Equivalents [Line Items]    
Restricted Cash and Investments, Noncurrent 57 62
BRAZIL    
Cash and Cash Equivalents [Line Items]    
Restricted Cash and Investments, Noncurrent $ 7 $ 7