Note 12 - Accounts Payable and Other Current Liabilities - Schedule of Accounts Payable and Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Accounts payable	$ 896	$ 752
Income and other taxes payable	726	823
Accrued wages and vacation	354	352
Interest payable	350	330
Accrued casualty costs	207	187
Other	717	706
Total accounts payable and other current liabilities	3,668	3,578
Equipment [Member]
Equipment rents payable	104	98
Accounts payable and Other Current Liabilities [Member]
Current operating lease liabilities	$ 314	$ 330