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Note 1 - Significant Accounting Policies (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Sep. 09, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Research and Development Expense, Total   $ 900 $ 800 $ 1,000
Foreign Currency Transaction Gain (Loss), Realized   130 126 (37)
Interest Costs Capitalized   48 36 58
Equity Method Investments   261 264  
Equity Method Investee [Member]        
Revenue from Related Parties   228 $ 312 $ 253
Other Accrued Liabilities [Member]        
Government Assistance, Cash Incentives Received, Liability   92    
Other Liabilities [Member]        
Government Assistance, Cash Incentives Received, Liability   $ 74    
Minimum [Member] | Building [Member]        
Property, Plant and Equipment, Useful Life (Year)   10 years    
Minimum [Member] | Equipment [Member]        
Property, Plant and Equipment, Useful Life (Year)   2 years    
Maximum [Member] | Building [Member]        
Property, Plant and Equipment, Useful Life (Year)   40 years    
Maximum [Member] | Equipment [Member]        
Property, Plant and Equipment, Useful Life (Year)   20 years    
Performance Shares [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years    
Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)   10 years    
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   1 year    
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   5 years    
HS LLC [Member]        
Business Acquisition, Percentage of Voting Interests Acquired 100.00%      
Hemlock Semiconductor Operations LLC [Member]        
Business Acquisition, Percentage of Voting Interests Acquired 80.50%      
DuPont de Nemours, Inc [Member] | HSG [Member]        
Noncontrolling Interest, Increase from Redemptions or Purchase of Interests $ 250