CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Current Assets:
Cash and Cash Equivalents	$ 964	$ 670
Short-term Investments (Note 9)	145	5
Accounts Receivable - Net (Note 8)	1,387	1,298
Materials and Supplies	439	390
Other Current Assets	176	187
Total Current Assets	3,111	2,550
Properties	54,078	53,816
Accumulated Depreciation	(17,262)	(17,005)
Properties - Net	36,816	36,811
Investment in Affiliates and Other Companies	2,653	2,634
Right-of-Use Lease Asset	451	464
Goodwill and Other Intangible Assets - Net	264	267
Other Long-term Assets	937	956
Total Assets	44,232	43,682
Current Liabilities:
Accounts Payable	1,115	1,149
Labor and Fringe Benefits Payable	414	532
Casualty, Environmental and Other Reserves (Note 4)	179	184
Current Maturities of Long-term Debt (Note 7)	710	708
Income and Other Taxes Payable	294	118
Interest Payable	243	170
Other Current Liabilities	266	272
Total Current Liabilities	3,221	3,133
Casualty, Environmental and Other Reserves (Note 4)	300	295
Long-term Debt (Note 7)	18,158	18,165
Deferred Income Taxes - Net	7,965	7,914
Long-term Lease Liability	469	479
Other Long-term Liabilities	538	536
Total Liabilities	30,651	30,522
Shareholders' Equity:
Common Stock, $1 Par Value	1,858	1,860
Other Capital	1,038	948
Retained Earnings	10,891	10,560
Accumulated Other Comprehensive Loss (Note 10)	(212)	(213)
Non-controlling Minority Interest	6	5
Total Shareholders' Equity	13,581	13,160
Total Liabilities and Shareholders' Equity	$ 44,232	$ 43,682