Accounts Payable And Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Accounts Payable And Other Current Liabilities [Abstract]
Accounts payable	$ 749	$ 872
Income and other taxes payable	496	694
Accrued wages and vacation	370	384
Current operating lease liabilities (Note 17)	362
Interest payable	289	317
Accrued casualty costs	190	211
Equipment rents payable	100	107
Other	538	575
Total accounts payable and other current liabilities	$ 3,094	$ 3,160