XML 87 R68.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Casualty, Environmental and Other Reserves - Narrative (Details) | Jun. 01, 2021 USD ($) | May 31, 2021 USD ($) | Dec. 31, 2021 USD ($) claim site | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
--- | --- | --- | --- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |  |  |  |
Reserves |  |  | $ 368,000,000 | $ 314,000,000 | $ 305,000,000 | $ 324,000,000
Casualty Reserves |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reserves |  |  | $ 180,000,000 | 196,000,000 | 187,000,000 | 199,000,000
Self-insured retention amount per injury | $ 100,000,000 | $ 75,000,000 |  |  |  |
Individual claims expected to exceed self-insured retention amount | claim |  |  | 0 |  |  |
Personal Injury |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reserves |  |  | $ 118,000,000 | 131,000,000 |  |
Environmental |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reserves |  |  | $ 108,000,000 | 76,000,000 | 74,000,000 | 80,000,000
Environmental impaired sites | site |  |  | 220 |  |  |
Other |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reserves |  |  | $ 80,000,000 | $ 42,000,000 | $ 44,000,000 | $ 45,000,000

X
- Definition Total number of claims expected to exceed self-insured retention amount, as of the balance sheet date. + References No definition available. + Details
Name: | csx_LossContingencyNumberOfClaimsExpectedToExceedSelfInsuredRetentionAmount
Namespace Prefix: | csx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of environmentally impaired sites at which the Company has been identified as a potentially responsible party. + References No definition available. + Details
Name: | csx_NumberOfImpairedSites
Namespace Prefix: | csx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Self insured retention amount for casualty and catastrophic property programs. + References No definition available. + Details
Name: | csx_SelfInsuredRetention
Namespace Prefix: | csx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=csx_TotalCasualtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=csx_PersonalInjuryCasualtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_EnvironmentalIssueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=csx_OtherReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |