CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and Cash Equivalents	$ 1,353,000,000	$ 1,958,000,000
Short-term Investments	83,000,000	129,000,000
Accounts Receivable - Net (Note 11)	1,393,000,000	1,313,000,000
Materials and Supplies	446,000,000	341,000,000
Other Current Assets	109,000,000	108,000,000
Total Current Assets	3,384,000,000	3,849,000,000
Properties	50,320,000,000	48,105,000,000
Accumulated Depreciation	(15,385,000,000)	(13,863,000,000)
Properties - Net (Note 6)	34,935,000,000	34,242,000,000
Investment in Affiliates and Other Companies (Note 15)	2,397,000,000	2,292,000,000
Right of Use Lease Asset (Note 7)	498,000,000	505,000,000
Goodwill and Other Intangible Assets - Net (Note 18)	506,000,000	502,000,000
Other Long-term Assets	688,000,000	522,000,000
Total Assets	42,408,000,000	41,912,000,000
Current Liabilities:
Accounts Payable	1,237,000,000	1,130,000,000
Labor and Fringe Benefits Payable	517,000,000	707,000,000
Casualty, Environmental and Other Reserves (Note 5)	144,000,000	144,000,000
Current Maturities of Long-term Debt (Note 10)	558,000,000	151,000,000
Income and Other Taxes Payable	525,000,000	111,000,000
Other Current Liabilities	243,000,000	228,000,000
Total Current Liabilities	3,224,000,000	2,471,000,000
Casualty, Environmental and Other Reserves (Note 5)	296,000,000	292,000,000
Long-term Debt (Note 10)	17,975,000,000	17,896,000,000
Deferred Income Taxes - Net (Note 12)	7,746,000,000	7,569,000,000
Long-term Lease Liability (Note 7)	491,000,000	488,000,000
Other Long-term Liabilities	543,000,000	571,000,000
Total Liabilities	30,275,000,000	29,287,000,000
Shareholders' Equity:
Common Stock, $1 Par Value (Note 3)	1,959,000,000	2,066,000,000
Other Capital	691,000,000	574,000,000
Retained Earnings	9,790,000,000	10,363,000,000
Accumulated Other Comprehensive Loss (Note 16)	(312,000,000)	(388,000,000)
Non-controlling Minority Interest	5,000,000	10,000,000
Total Shareholders' Equity	12,133,000,000	12,625,000,000
Total Liabilities and Shareholders' Equity	$ 42,408,000,000	$ 41,912,000,000