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Segment Reporting - Additional Information (Detail) SquareFeet in Millions	9 Months Ended
	Sep. 30, 2025 Operators Trailers Drivers Segment Tractors NumberOfOperatingLocation SquareFeet Containers
Segment Reporting Information [Line Items]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember
Number of Reportable Segments | Segment	2
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	Our CODM uses operating income by segment to make decisions over the allocation of capital and resources and assess the performance of our segments.
Warehousing space | SquareFeet	7
Intermodal [Member]
Segment Reporting Information [Line Items]
Number of containers | Containers	51,000
Number of operating locations | NumberOfOperatingLocation	32
Number of Tractor | Tractors	2,300
Number of Drivers | Drivers	3,100
Number of Trailer | Trailers	4,700
Number of Independent Owners | Operators	500

X

- Definition

Represents the number of containers in hand.

+ References

No definition available.

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- Definition

Number of Drivers

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X

- Definition

Number of independent owners for contract for services.

+ References

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- Definition

Number Of Operating Locations

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- Definition

Number of tractor.

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- Definition

Number of Trailer

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- Definition

warehousing space.

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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

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- Definition

Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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- Definition

Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource.

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- 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.

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No definition available.

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