Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Railway operating revenues	$ 3,103	$ 3,051	$ 9,206	$ 9,099
Railway operating expenses
Compensation and benefits	738	690	2,169	2,126
Purchased services and rents	519	497	1,537	1,541
Fuel	237	216	700	757
Depreciation	348	339	1,040	1,011
Materials and other	147	(188)	547	200
Merger-related expenses	15	0	15	0
Restructuring and other charges	12	60	22	156
Eastern Ohio incident	(11)	(159)	(243)
Eastern Ohio incident				368
Total railway operating expenses	2,005	1,455	5,787	6,159
Income from railway operations	1,098	1,596	3,419	2,940
Other income – net	23	34	78	69
Interest expense on debt	197	203	597	608
Income before income taxes	924	1,427	2,900	2,401
Income taxes	213	328	671	512
Net income	$ 711	$ 1,099	$ 2,229	$ 1,889
Earnings per share
Basic (in dollars per share)	$ 3.16	$ 4.86	$ 9.89	$ 8.35
Diluted (in dollars per share)	$ 3.16	$ 4.85	$ 9.88	$ 8.34

Materials And Other Expense (Income)

No definition available.

Name:	nsc_MaterialsAndOtherExpenseIncome
Namespace Prefix:	nsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of expense for contract services provided to the Company and rent paid for freight cars owned by other railroads or private companies net of rents received, including lease expenses, primarily for locomotives, railcars, containers, and trailers.

+ References

No definition available.