Note 1 - Summary of Significant Accounting Policies - Supplemental Disclosure of Cash Flow Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accruals for capital expenditures		$ 217	$ 414	$ 357
Interest (1)	[1]	274	275	287
Income taxes, net of refunds received		$ 213	$ 426	$ 377

[1] Includes approximately $40 million, $48 million and $36 million of interest costs that were capitalized as part of property, plant and equipment during the years ended December 31, 2023, 2022 and 2021, respectively.