Note 9 - Debt and Capital Leases and Related Maturities and Interest Rates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Carrying Value	$ 401	$ 403
Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	396	4
Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 5	399
Term Note [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Weighted-Average Effective Interest Rate	8.84%
Carrying Value	$ 394
Term Note [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Maturity	2019
Weighted-Average Effective Interest Rate	8.84%
Carrying Value		393
Capital Leases [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 2	3
Capital Leases [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	3	4
Other Debt [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value		1
Other Debt [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 2	$ 2