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v2.4.1.9

Business Segments - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2014 Segment
Segment Reporting Information [Line Items] |
Reporting business segments | 2 us-gaap_NumberOfReportableSegments
Minimum [Member] |
Segment Reporting Information [Line Items] |
Number of railheads | 1 hubg_NumberOfRailheads / us-gaap_RangeAxis = us-gaap_MinimumMember

X
- Definition Number of railheads. + References No definition available. + Details
Name: | hubg_NumberOfRailheads
Namespace Prefix: | hubg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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