Business Segment Information - Financial Information Regarding Company's Operations by Geographic Area (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 2,206,678	$ 2,592,589
Directly related cost of transportation and other expenses	[1]	1,433,280	1,719,102
Salaries and other operating expenses	[2]	558,622	597,518
Operating income		214,776	275,969
Identifiable assets at period end		4,488,268	5,332,577	$ 4,523,809
Capital expenditures		10,181	10,126
Equity		2,197,665	3,150,368	$ 2,391,413	$ 3,113,535
Operating Segments | United States Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		751,543	945,494
Directly related cost of transportation and other expenses	[1]	403,949	539,957
Salaries and other operating expenses	[2]	255,708	267,683
Operating income		91,886	137,854
Identifiable assets at period end		2,424,540	3,005,502
Capital expenditures		5,528	5,444
Equity		1,531,497	2,284,489
Operating Segments | Other North America Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		106,850	109,850
Directly related cost of transportation and other expenses	[1]	66,710	69,205
Salaries and other operating expenses	[2]	33,084	35,824
Operating income		7,056	4,821
Identifiable assets at period end		177,571	206,459
Capital expenditures		1,399	469
Equity		26,143	35,977
Operating Segments | Latin America Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		44,492	54,695
Directly related cost of transportation and other expenses	[1]	24,464	32,302
Salaries and other operating expenses	[2]	16,764	19,502
Operating income		3,264	2,891
Identifiable assets at period end		105,151	119,334
Capital expenditures		153	230
Equity		55,173	57,026
Operating Segments | North Asia Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		544,941	582,421
Directly related cost of transportation and other expenses	[1]	426,474	452,342
Salaries and other operating expenses	[2]	67,260	71,140
Operating income		51,207	58,939
Identifiable assets at period end		504,704	633,970
Capital expenditures		282	590
Equity		185,824	317,325
Operating Segments | South Asia Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		227,719	224,127
Directly related cost of transportation and other expenses	[1]	164,024	157,623
Salaries and other operating expenses	[2]	40,912	46,798
Operating income		22,783	19,706
Identifiable assets at period end		265,621	284,028
Capital expenditures		144	167
Equity		118,194	153,321
Operating Segments | Europe Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		398,317	534,464
Directly related cost of transportation and other expenses	[1]	254,519	372,260
Salaries and other operating expenses	[2]	117,088	127,372
Operating income		26,710	34,832
Identifiable assets at period end		755,569	844,049
Capital expenditures		2,218	2,983
Equity		162,346	191,116
Operating Segments | Middle East Africa and India Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		134,106	142,703
Directly related cost of transportation and other expenses	[1]	93,792	95,949
Salaries and other operating expenses	[2]	28,464	29,832
Operating income		11,850	16,922
Identifiable assets at period end		284,325	254,458
Capital expenditures		457	243
Equity		160,237	154,143
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		(1,290)	(1,165)
Directly related cost of transportation and other expenses	[1]	(652)	(536)
Salaries and other operating expenses	[2]	(658)	(633)
Operating income		20	4
Identifiable assets at period end		(29,213)	(15,223)
Capital expenditures		0	0
Equity		$ (41,749)	$ (43,029)

[1] Directly related cost of transportation and other expenses totals operating expenses from airfreight services, ocean freight and ocean services and customs brokerage and other services as shown in the condensed consolidated statements of earnings.

[2] Salaries and other operating expenses totals salaries and related, rent and occupancy, depreciation and amortization, selling and promotion and other as shown in the condensed consolidated statements of earnings.