Revenue from Contracts with Customers - Summary of Disaggregated Revenue by Business Line (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,401,457	$ 981,320	$ 2,699,580	$ 1,900,873
Intermodal And Transportation Solutions
Disaggregation of Revenue [Line Items]
Total revenue	872,501	618,880	1,646,076	1,194,136
Truck brokerage [Member]
Disaggregation of Revenue [Line Items]
Total revenue	265,861	139,991	561,467	267,253
Logistics [Member]
Disaggregation of Revenue [Line Items]
Total revenue	$ 263,095	$ 222,449	$ 492,037	$ 439,484