XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Receivables [Abstract] |  |  |
Accruals for revenues earned included in accounts receivable | $ 136,300 | $ 139,500 |
Receivables from insurance companies to cover claims in excess included in accounts receivable | $ 29,600 | 27,700 |
Drydocking on Ocean-Going Vessels [Abstract] |  |  |
Period in which recertification of ocean going vessels occur twice | 5 years |  |
Recognized amortization of major maintenance costs | $ 29,000 | 29,000 | $ 33,200
Capitalized interest excluded from interest expense | $ 0 | $ 0 | $ 0
Minimum [Member] |  |  |
Drydocking on Ocean-Going Vessels [Abstract] |  |  |
Period of amortization of shipyard costs | 30 months |  |
Maximum [Member] |  |  |
Drydocking on Ocean-Going Vessels [Abstract] |  |  |
Period of amortization of shipyard costs | 60 months |  |
Marine Transportation Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Marine Transportation Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |
Buildings [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |
Buildings [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |
Other Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 2 years |  |
Other Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |

X
- Definition Amount of amortization expense attributable to major maintenance activity costs. + References No definition available. + Details
Name: | kex_AmortizationOfMajorMaintenanceActivityCosts
Namespace Prefix: | kex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Dry Docking And Ocean Going Vessels Abstract + References No definition available. + Details
Name: | kex_DryDockingAndOceanGoingVesselsAbstract
Namespace Prefix: | kex_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period in which recertification of ocean going vessels occur twice. + References No definition available. + Details
Name: | kex_PeriodInWhichRecertificationOfOceanGoingVesselsOccurTwice
Namespace Prefix: | kex_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period of amortization of shipyard costs. + References No definition available. + Details
Name: | kex_PeriodOfAmortizationOfShipyardCosts
Namespace Prefix: | kex_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Refers to the amount of receivables from insurance companies to cover claims in excess included in accounts receivable. + References No definition available. + Details
Name: | kex_ReceivablesFromInsuranceCompaniesToCoverClaimsInExcessIncludedInAccountsReceivable
Namespace Prefix: | kex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest capitalized during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483013/835-20-50-1 + Details
Name: | us-gaap_InterestCostsCapitalized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_UnbilledReceivablesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
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: |