Note 3 - Revenue (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Contract with Customer, Liability	$ 1,200	$ 1,300
Increase (Decrease) in Contract with Customer, Liability	103	198
HSG [Member]
Contract with Customer, Liability	$ 860	$ 869
Maximum [Member]
Long Term Supply, Commitment Period (Year)	10 years