Schedule Of Revenue By Major Customers By Reporting Segments (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue		$ 4,819,245	$ 5,303,322	$ 7,436,562
BCO Independent Contractors – Truck
Disaggregation of Revenue [Line Items]
Percentage of Consolidated Revenue		38.00%	38.00%	35.00%
Brokerage Carriers - Truck
Disaggregation of Revenue [Line Items]
Percentage of Consolidated Revenue		52.00%	53.00%	54.00%
Rail Intermodal
Disaggregation of Revenue [Line Items]
Percentage of Consolidated Revenue		2.00%	2.00%	2.00%
Ocean and air cargo carriers
Disaggregation of Revenue [Line Items]
Percentage of Consolidated Revenue		6.00%	5.00%	8.00%
BCO Independent Contractor Truck and Brokerage Carriers Truck | Van Equipment
Disaggregation of Revenue [Line Items]
Revenue		$ 2,447,810	$ 2,742,281	$ 3,892,085
BCO Independent Contractor Truck and Brokerage Carriers Truck | Unsided/Platform Equipment
Disaggregation of Revenue [Line Items]
Revenue		1,455,663	1,490,393	1,760,357
BCO Independent Contractor Truck and Brokerage Carriers Truck | Less than Truckload
Disaggregation of Revenue [Line Items]
Revenue		99,828	117,683	142,438
BCO Independent Contractor Truck and Brokerage Carriers Truck | Other Truck Transportation
Disaggregation of Revenue [Line Items]
Revenue	[1]	$ 343,253	$ 479,173	$ 835,959

[1] Includes power-only, expedited, straight truck, cargo van, and miscellaneous other truck transportation revenue generated by the transportation logistics segment. Power-only refers to shipments where the Company furnishes a power unit and an operator but not trailing equipment, which is typically provided by the shipper or consignee.