Note 6 - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Assets Noncurrent Disclosure [Abstract]
Pension assets	$ 173	$ 82
Estimated workers' compensation recoveries	18	17
Long-term receivables, net of allowance of $4 million and $4 million	11	13
Other	26	31
Total	$ 228	$ 143