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Note 10 - Accounts Receivable (Details Textual) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss, Current $ 10 $ 10  
Total Transfer Capacity, Undivided Interests to Investors under Receivables Securitization Facility $ 800    
Receivables Securitization Facility, Duration (Year) 3 years    
Value Outstanding, Undivided Interest Held by Investors Under Receivables Securitization Facility $ 100 300  
Accounts Receivable, Supporting Undivided Investor Held Interest 1,600 1,300  
Interest Expense, Total $ 1,271 1,157 $ 1,141
Receivables Securitization Facility, Maturity Date Jul. 31, 2025    
Asset-Backed Securities, Securitized Loans and Receivables [Member]      
Accounts Receivable, from Securitization, Default or Dilution Ratio 1.00%    
Interest Expense, Total $ 10 4 $ 7
Maximum [Member]      
Total Transfer Capacity, Undivided Interests to Investors under Receivables Securitization Facility 800    
Other Assets [Member]      
Accounts Receivable, Allowance for Credit Loss, Noncurrent $ 58 $ 51