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Note 17 - Income Taxes (Details Textual) - USD ($)
$ in Millions
 12 Months Ended 36 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Operating Loss Carryforwards $ 2,228 $ 2,228    
Operating Loss Carryforwards, Not Subject to Expiration 1,062 1,062    
Operating Loss Carryforwards, Not Subject to Expiration, Interest Carryforward 218 218    
Operating Loss Carryforwards, Subject to Expiration $ 1,166 $ 1,166    
Net Operating Losses and Tax Credit Carryforwards, Limitations Minimum Ownership Change Percentage 50.00% 50.00%    
Net Operating Losses and Tax Credit Carryforwards, Limitations, Ownership Change Period (Year)   3 years    
Deferred Tax Liabilities, Undistributed Foreign Earnings $ 15 $ 15 $ 16  
Deferred Tax Assets, Valuation Allowance 671 671 778  
Deferred Tax Assets, Net of Valuation Allowance 207 207 254  
Income Tax Examination, Penalties and Interest Accrued 11 11 10 $ 10
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 14 14 13 $ 13
Foreign Tax Authority [Member]        
Operating Loss Carryforwards, Subject to Expiration 97 97    
Operating Loss Carryforwards, Expired 147 147    
Deferred Tax Assets, Valuation Allowance 259 259 290  
Deferred Tax Assets, Net of Valuation Allowance $ 251 251 279  
Open Tax Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024      
Domestic Tax Authority [Member]        
Deferred Tax Assets, Valuation Allowance $ 412 412 488  
Deferred Tax Assets, Net of Valuation Allowance $ 396 396 $ 472  
Open Tax Year 2020 2021 2022 2023 2024      
State and Local Jurisdiction [Member]        
Open Tax Year 2017 2018 2019 2020 2021 2022 2023 2024      
General Business Tax Credit Carryforward [Member]        
Tax Credit Carryforward, Amount $ 134 134    
Investment Tax Credit Carryforward [Member]        
Tax Credit Carryforward, Amount 21 21    
Research and Development Tax Credit Carryforward [Member]        
Tax Credit Carryforward, Amount $ 10 $ 10