XML 77 R56.htm IDEA: XBRL DOCUMENT v3.22.4

Properties (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Cost	$ 44,748	$ 43,684
Accumulated Depreciation	(12,592)	(12,031)
Net Book Value	32,156	31,653
Land
Property, Plant and Equipment [Line Items]
Cost	2,405	2,453
Accumulated Depreciation	0	0
Net Book Value	$ 2,405	$ 2,453
Depreciation Rate	0.00%	0.00%
Rail and other track material
Property, Plant and Equipment [Line Items]
Cost	$ 7,589	$ 7,330
Accumulated Depreciation	(1,971)	(1,907)
Net Book Value	$ 5,618	$ 5,423
Depreciation Rate	2.42%	2.40%
Ties
Property, Plant and Equipment [Line Items]
Cost	$ 5,981	$ 5,779
Accumulated Depreciation	(1,696)	(1,642)
Net Book Value	$ 4,285	$ 4,137
Depreciation Rate	3.49%	3.44%
Ballast
Property, Plant and Equipment [Line Items]
Cost	$ 3,126	$ 3,041
Accumulated Depreciation	(873)	(818)
Net Book Value	$ 2,253	$ 2,223
Depreciation Rate	2.84%	2.79%
Construction in process
Property, Plant and Equipment [Line Items]
Cost	$ 431	$ 339
Accumulated Depreciation	0	0
Net Book Value	$ 431	$ 339
Depreciation Rate	0.00%	0.00%
Other roadway
Property, Plant and Equipment [Line Items]
Cost	$ 14,270	$ 14,111
Accumulated Depreciation	(3,948)	(3,733)
Net Book Value	$ 10,322	$ 10,378
Depreciation Rate	2.69%	2.69%
Total roadway
Property, Plant and Equipment [Line Items]
Cost	$ 31,397	$ 30,600
Accumulated Depreciation	(8,488)	(8,100)
Net Book Value	22,909	22,500
Locomotives
Property, Plant and Equipment [Line Items]
Cost	5,878	5,695
Accumulated Depreciation	(2,060)	(1,994)
Net Book Value	$ 3,818	$ 3,701
Depreciation Rate	3.66%	3.87%
Freight cars
Property, Plant and Equipment [Line Items]
Cost	$ 2,701	$ 2,701
Accumulated Depreciation	(1,033)	(1,009)
Net Book Value	$ 1,668	$ 1,692
Depreciation Rate	2.51%	2.59%
Computers and software
Property, Plant and Equipment [Line Items]
Cost	$ 926	$ 893
Accumulated Depreciation	(476)	(438)
Net Book Value	$ 450	$ 455
Depreciation Rate	9.10%	10.34%
Construction in process
Property, Plant and Equipment [Line Items]
Cost	$ 206	$ 164
Accumulated Depreciation	0	0
Net Book Value	$ 206	$ 164
Depreciation Rate	0.00%	0.00%
Other equipment
Property, Plant and Equipment [Line Items]
Cost	$ 1,145	$ 1,088
Accumulated Depreciation	(463)	(420)
Net Book Value	$ 682	$ 668
Depreciation Rate	4.51%	4.63%
Total equipment
Property, Plant and Equipment [Line Items]
Cost	$ 10,856	$ 10,541
Accumulated Depreciation	(4,032)	(3,861)
Net Book Value	6,824	6,680
Other property
Property, Plant and Equipment [Line Items]
Cost	90	90
Accumulated Depreciation	(72)	(70)
Net Book Value	$ 18	$ 20
Depreciation Rate	2.26%	2.25%

X

- Definition

Represents the rate of depreciation applied to a particular asset class

+ References

No definition available.

+ Details

Name:	nsc_DepreciationRate
Namespace Prefix:	nsc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(14))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 360
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124429447&loc=SL124453093-239630

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_RailroadTransportationEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_TiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_BallastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_ConstructionInProcessRoadwayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_OtherRoadwayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_TotalRoadwayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_LocomotivesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_FreightCarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TechnologyEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nsc_ConstructionInProcessEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OtherMachineryAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=srt_OtherPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: