Note 5 - Long-Term Debt and Related Maturities and Interest Rates (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Carrying Value	$ 672	$ 685
Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	8	6
Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 664	679
Term Note [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Maturity	2017
Weighted-Average Effective Interest Rate	7.50%
Carrying Value	$ 1	4
VIE Credit Facility [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Maturity	2017
Weighted-Average Effective Interest Rate	3.50%
Carrying Value	$ 4
Capital Leases [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	3	2
Capital Leases [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 7	6
2019 Term Note [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Maturity	2019
Weighted-Average Effective Interest Rate	7.50%
Carrying Value	$ 396	400
2020 Term Note [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Maturity	2020
Weighted-Average Effective Interest Rate	11.08%
Carrying Value	$ 258	270
VIE Term Loan [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Maturity	2035
Weighted-Average Effective Interest Rate	6.07%
Carrying Value	$ 3	$ 3