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Note 4 - Debt and Finance Leases and Related Maturities and Interest Rates (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Carrying Value $ 309 $ 254
Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value $ 308 253
RED-Rochester, LLC [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Maturity 2033  
Weighted-Average Effective Interest Rate 11.42%  
Carrying Value $ 1 1
RED-Rochester, LLC [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Maturity 2033  
Weighted-Average Effective Interest Rate 11.42%  
Carrying Value $ 12 12
Finance leases [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value $ 1 1
Finance leases [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value   1
Term Loans [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Maturity 2026  
Weighted-Average Effective Interest Rate 13.81%  
Carrying Value $ 279 224
Convertible Debt [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Maturity 2026  
Weighted-Average Effective Interest Rate 17.28%  
Carrying Value $ 16 15
Other Debt [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value $ 1 $ 1