XML 44 R34.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Commitments and Contingencies (Details) | 1 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2016 mi | May 31, 2007 entity | Jun. 24, 2016 USD ($) claim mi
Loss Contingencies [Line Items] |  |  |
Casualty and non catastrophic property deductible |  |  | $ 25,000,000
Casualty and catastrophic property deductible |  |  | $ 50,000,000
Environmental |  |  |
Loss Contingencies [Line Items] |  |  |
Number of miles pertaining to Passaic River tidal reach required to be studied by EPA | mi |  |  | 17
Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Claims with potential material impact | claim |  |  | 1
Pending Litigation | Fuel Surcharge Antitrust Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Class action lawsuits filed against U.S.-based Class I railroads, excluding CSXT (number of entities) | entity |  | 3 |
Settled Litigation | Environmental |  |  |
Loss Contingencies [Line Items] |  |  |
Number of miles subject to remediation | mi | 8 |  |
Years required for site cleanup |  |  | 10 years
Minimum | Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Possible loss for certain legal proceedings |  |  | $ 2,000,000
Maximum | Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Possible loss for certain legal proceedings |  |  | $ 101,000,000

X
- Definition Deductible amount for casualty and catastrophic property programs. + References No definition available. + Details
Name: | csx_CasualtyAndCatastrophicPropertyDeductible
Namespace Prefix: | csx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deductible amount for non-catastrophic property programs. + References No definition available. + Details
Name: | csx_CasualtyAndNonCatastrophicPropertyDeductible
Namespace Prefix: | csx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loss Contingency, Claims Filed, Number Of Entities + References No definition available. + Details
Name: | csx_LossContingencyClaimsFiledNumberOfEntities
Namespace Prefix: | csx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency Number of Claims with Potential Adverse Impact + References No definition available. + Details
Name: | csx_LossContingencyNumberofClaimswithPotentialAdverseImpact
Namespace Prefix: | csx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of miles on the Passaic River tidal reach required to be studied as determined by the US Environmental Protection Agency. + References No definition available. + Details
Name: | csx_NumberofmilespertainingtoPassaicRivertidalreachrequiredtobestudiedbyEPA
Namespace Prefix: | csx_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Site Contingency, Number of Miles Under Study + References No definition available. + Details
Name: | csx_SiteContingencyNumberofMilesUnderStudy
Namespace Prefix: | csx_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Site Contingency, Years Required for Site Clean Up + References No definition available. + Details
Name: | csx_SiteContingencyYearsRequiredforSiteCleanUp
Namespace Prefix: | csx_
Data Type: | xbrli:durationItemType
Balance Type: | na
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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LitigationCaseAxis=csx_EnvironmentalLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationCaseAxis=csx_FuelSurchargeAntitrustLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_SettledLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |