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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2018 Container | Sep. 30, 2018 USD ($) Container Tractor Trailer
Commitments And Contingencies Disclosure [Abstract] |  |
Purchase contract units, containers | Container | 3,670 |
Number of containers received | Container |  | 2,370
Number of containers expected to be received in remainder of fiscal year | Container |  | 1,300
Purchase contract units tractors | Tractor |  | 869
Cost of purchasing tractors | $ |  | $ 107.2
Number of tractors received | Tractor |  | 543
Number of tractors expected to be received in remainder of fiscal year | Tractor |  | 326
Purchase contract units trailers | Trailer |  | 760
Cost of purchasing trailers | $ |  | $ 24.2
Number of trailers received | Trailer |  | 477
Number of trailers expected to be received in remainder of fiscal year | Trailer |  | 283

X
- Definition Cost of purchasing tractors. + References No definition available. + Details
Name: | hubg_CostOfPurchasingTractors
Namespace Prefix: | hubg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cost of purchasing trailers. + References No definition available. + Details
Name: | hubg_CostOfPurchasingTrailers
Namespace Prefix: | hubg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of containers expected to be received in remainder of fiscal year. + References No definition available. + Details
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Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of containers received. + References No definition available. + Details
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Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of tractors expected to be received in remainder of fiscal year. + References No definition available. + Details
Name: | hubg_NumberOfTractorsExpectedToBeReceivedInRemainderOfFiscalYear
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of tractors received. + References No definition available. + Details
Name: | hubg_NumberOfTractorsReceived
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of trailers expected to be received in remainder of fiscal year. + References No definition available. + Details
Name: | hubg_NumberOfTrailersExpectedToBeReceivedInRemainderOfFiscalYear
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of trailers received. + References No definition available. + Details
Name: | hubg_NumberOfTrailersReceived
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase contract units containers. + References No definition available. + Details
Name: | hubg_PurchaseContractUnitsContainers
Namespace Prefix: | hubg_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase contract units tractors. + References No definition available. + Details
Name: | hubg_PurchaseContractUnitsTractors
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase contract units trailers. + References No definition available. + Details
Name: | hubg_PurchaseContractUnitsTrailers
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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