Note 8 - Short-term Borrowings and Long-term Debt (Details) - Long-term Debt and Related Maturities and Interest Rates - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Carrying Value	$ 680	$ 677
Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	5	5
Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 675	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
Other Long-term Debt [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 1
Other Long-term Debt [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Carrying Value	$ 5
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
Minimum [Member] | Other Long-term Debt [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Weighted-Average Effective Interest Rate	3.12%
Minimum [Member] | Other Long-term Debt [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Weighted-Average Effective Interest Rate	3.12%
Maximum [Member] | Other Long-term Debt [Member] | Current Portion, Long-term Debt [Member]
Debt Instrument [Line Items]
Weighted-Average Effective Interest Rate	6.07%
Maximum [Member] | Other Long-term Debt [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Weighted-Average Effective Interest Rate	6.07%