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Note 8 - Long-Term Debt and Related Maturities and Interest Rates (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Carrying Value $ 677 $ 677
Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value 4 5
Long-term Debt [Member]    
Debt Instrument [Line Items]    
Carrying Value $ 673 672
Term Note [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Weighted-Average Effective Interest Rate 7.56%  
Carrying Value $ 4 4
Line of Credit [Member] | Current Portion, Long-term Debt [Member]    
Debt Instrument [Line Items]    
Weighted-Average Effective Interest Rate 2.42%  
Carrying Value   1
Term Note 7.56% [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Weighted-Average Effective Interest Rate 7.56%  
Carrying Value $ 400 403
Term Note 11.04% [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Weighted-Average Effective Interest Rate 11.04%  
Carrying Value $ 270 $ 269
Other Long-term Debt [Member] | Long-term Debt [Member]    
Debt Instrument [Line Items]    
Weighted-Average Effective Interest Rate 6.07%  
Carrying Value $ 3