Note 6 - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Other Assets Noncurrent Disclosure [Abstract]
Pension assets	$ 82	$ 43
Estimated workers' compensation recoveries	17	22
Long-term receivables, net of allowance of $4 million and $4 million	13	15
Other	32	33
Total	$ 144	$ 113