Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities
Net income	$ 2,873	$ 2,622	$ 1,827
Reconciliation of net income to net cash provided by operating activities:
Depreciation	1,393	1,353	1,298
Deferred income taxes	277	176	(49)
Gains and losses on properties	(253)	(490)	(49)
Changes in assets and liabilities affecting operations:
Accounts receivable	59	85	(2)
Materials and supplies	6	(13)	(11)
Other current assets	(23)	5	(54)
Current liabilities other than debt	259	548	435
Other – net	(230)	(234)	(216)
Net cash provided by operating activities	4,361	4,052	3,179
Cash flows from investing activities
Property additions	(2,204)	(2,381)	(2,327)
Acquisition of assets of CSR	0	(1,643)	(22)
Property sales and other transactions	164	558	86
Investment purchases	(621)	(319)	(124)
Investment sales and other transactions	99	1,005	205
Net cash used in investing activities	(2,562)	(2,780)	(2,182)
Cash flows from financing activities
Dividends	(1,215)	(1,221)	(1,225)
Common Stock transactions	2	26	3
Purchase and retirement of Common Stock	(534)	0	(622)
Proceeds from borrowings	396	1,051	3,293
Debt repayments	(559)	(1,055)	(1,334)
Net cash provided by (used in) financing activities	(1,910)	(1,199)	115
Net increase (decrease) in cash and cash equivalents	(111)	73	1,112
Cash and cash equivalents
At beginning of year	1,641	1,568	456
At end of year	1,530	1,641	1,568
Supplemental disclosures of cash flow information
Interest (net of amounts capitalized)	765	764	653
Income taxes (net of refunds)	$ 491	$ 305	$ 681