Accounts Payable And Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accounts Payable and Other Current Liabilities Details [Abstract]
Income and other taxes payable	$ 769	$ 635
Accounts payable	612	612
Accrued wages and vacation	340	340
Interest payable	330	326
Current liabilities operating leases	297	321
Accrued casualty costs	186	177
Equipment rents payable	99	101
Other	614	592
Total accounts payable and other current liabilities	$ 3,247	$ 3,104