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Note 10 - Leases - Summary of Undiscounted Cash Flows to Be Paid for Leases (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
2024, operating leases $ 17  
2024, finance leases 0  
2025, operating leases 8  
2025, finance leases 1  
2026, operating leases 6  
2026, finance leases 0  
2027, operating leases 5  
2027, finance leases 0  
2028, operating leases 5  
2028, finance leases 0  
Thereafter, operating leases 13  
Thereafter, finance leases 0  
Total minimum lease payments, operating leases 54  
Total minimum lease payments, finance leases 1  
Less: amount of lease payments representing interest, operating leases (17)  
Less: amount of lease payments representing interest, finance leases 0  
Present value of future minimum lease payments, operating leases 37  
Less: current obligations under leases, operating leases 13 $ 15
Long-term lease obligations, operating leases 24 31
Long-term and Short-term Debt [Member]    
Present value of future minimum lease payments, finance leases 1  
Short-term Borrowings and Current Portion of Long-term Debt [Member]    
Less: current obligations under leases, finance leases 0  
Long-term Debt, Net of Current Portion [Member]    
Long-term lease obligations, finance leases $ 1 $ 1