Note 10 - Accounts Payable and Other Current Liabilities - Schedule of Accounts Payable and Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Accounts payable	$ 952	$ 784
Income and other taxes payable	815	628
Compensation-related accruals	490	938
Accrued casualty costs	251	242
Interest payable	246	379
Other	419	431
Total accounts payable and other current liabilities	3,617	3,842
Equipment [Member]
Equipment rents payable	100	109
Accounts payable and Other Current Liabilities [Member]
Current operating lease liabilities	$ 344	$ 331