Note 4 - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Other Assets Noncurrent Disclosure [Abstract]
Pension assets	$ 252	$ 173
Estimated workers' compensation recoveries	18	18
Long-term receivables, net of reserve of $4 and $4, respectively	11	11
Other	24	26
Total	$ 305	$ 228