Note 1 - Cumulative Effect of Changes made to Consolidated Statement of Financial Position on Adoption of Accounting Standards (Details) - USD ($) $ in Millions	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Liabilities
Other current liabilities	$ 224		$ 217
Other long-term liabilities	207		202
Equity (Deficit)
Accumulated deficit	(209)		$ (174)
ASU 2014-09 [Member]
Liabilities
Other current liabilities		$ 219
Other long-term liabilities		210
Equity (Deficit)
Accumulated deficit	(10)	(184)
ASU 2014-09 [Member] | Effect of Change Higher (Lower) [Member]
Liabilities
Other current liabilities	2	2
Other long-term liabilities	7	8
Equity (Deficit)
Accumulated deficit	$ (9)	$ (10)