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Note 8 - Debt and Capital Leases and Related Maturities and Interest Rates (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Carrying Value $ 403 $ 411
Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value 4 6
Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value $ 399 405
Term Note [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Weighted-Average Effective Interest Rate 7.61%  
Carrying Value   2
Term Note [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Maturity 2019  
Weighted-Average Effective Interest Rate 7.61%  
Carrying Value $ 393 396
Capital Leases [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value 3 3
Capital Leases [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value 4 6
Other Debt [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value 1 1
Other Debt [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value $ 2 $ 3