Note 19 - Restructuring Costs and Other - Restructuring Liabilities (Details) (Parenthetical) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Restructuring And Related Activities [Abstract]
Other adjustments & reclasses	[1]	$ 3	$ 5
Severance Costs		$ 3	$ 5

[1] The $3 million and $5 million represent severance charges funded from pension plan assets, which were reclassified to Pension and other postretirement liabilities.