Note 13 - Financial Instruments (Details Textual) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Current	$ 20	$ 16
Debt Instrument, Fair Value Disclosure	27,300	28,500
Fair Value of Total Debt Less of Carrying Value	4,100	4,100
Fair Value, Inputs, Level 2 [Member]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Current	$ 20	$ 16