XML 62 R28.htm IDEA: XBRL DOCUMENT
v3.23.1

Nature of Operations and Significant Accounting Policies - Narrative (Details) $ in Millions | 3 Months Ended | 21 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) state mi | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Mar. 26, 2021 property phase
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Rail route network, distance | mi | 20,000 |  |  |
Number of states rail network serves | state | 26 |  |  |
Proceeds from sale of property, plant, and equipment | $ 8 | $ 8 |  |
Gain (loss) on disposition of property plant equipment | $ 8 | 27 |  |
Virginia Line Segments |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Number of property rights for sale | property |  |  |  | 3
Number of phases to complete property rights sale transaction | phase |  |  |  | 3
Proceeds from sale of property, plant, and equipment |  |  | $ 525 |
Gain (loss) on disposition of property plant equipment |  | $ 20 | $ 493 |

X
- Definition Number Of Phases To Complete Property, Plant And Equipment Sale Transaction + References No definition available. + Details
Name: | csx_NumberOfPhasesToCompletePropertyPlantAndEquipmentSaleTransaction
Namespace Prefix: | csx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Property, Plant And Equipment For Sale + References No definition available. + Details
Name: | csx_NumberOfPropertyPlantAndEquipmentForSale
Namespace Prefix: | csx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Rail Route Network, Distance + References No definition available. + Details
Name: | csx_RailRouteNetworkDistance
Namespace Prefix: | csx_
Data Type: | dtr-types:lengthItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=csx_LandEasementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |