Summary of Disaggregated Revenue by Business Line (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenue	$ 5,340,490	$ 4,232,383	$ 3,495,644
Intermodal And Transportation Solutions [Member]
Disaggregation Of Revenue [Line Items]
Revenue	3,301,835	2,656,128	2,297,238
Truck brokerage [Member]
Disaggregation Of Revenue [Line Items]
Revenue	1,049,733	688,867	431,127
Logistics [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 988,922	$ 887,388	$ 767,279