Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Schedule of Cost and Expense

	2025		2024		2023
	($ in millions)
Railway operating revenues (Note 3)	$	12,180	$	12,123	$	12,156
Railway operating expenses
Compensation and benefits	2,922		2,823		2,819
Purchased services	1,675		1,655		1,683
Equipment rents	420		393		387
Fuel	932		987		1,170
Depreciation	1,393		1,353		1,298
Materials	411		369		364
Claims	281		237		242
Other	(58)		(273)		226
Merger-related expenses	80		—		—
Restructuring and other charges	22		183		—
Eastern Ohio incident	(254)		325		1,116
Total railway operating expenses	7,824		8,052		9,305
Income from railway operations	4,356		4,071		2,851
Other income – net	101		65		191
Interest expense on debt	792		807		722
Income before income taxes	3,665		3,329		2,320
Income taxes	792		707		493
Net income	$	2,873	$	2,622	$	1,827