Note 1 - Significant Accounting Policies - Supplemental Disclosure of Cash Flow Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accruals for capital expenditures		$ 414	$ 357	$ 231
Interest (1)	[1]	275	287	298
Income taxes, net of refunds received		$ 426	$ 377	$ 220

[1] Includes approximately $48 million, $36 million and $58 million of interest costs that were capitalized as part of property, plant and equipment, net of accumulated depreciation, during the year ended December 31, 2022, 2021 and 2020, respectively.