Business Segment Information - Financial Information Regarding Company's Operations by Geographic Area (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 3,000,131	$ 2,190,001	$ 7,645,810	$ 7,022,342
Directly related cost of transportation and other expenses	[1]	2,093,964	1,402,111	5,166,652	4,540,396
Salaries and other operating expenses	[2]	604,643	571,821	1,738,939	1,741,411
Operating income		301,524	216,069	740,219	740,535
Identifiable assets at period end		5,170,917	4,578,121	5,170,917	4,578,121	$ 4,523,809
Capital expenditures		12,291	7,993	30,415	28,600
Equity		2,359,170	2,491,474	2,359,170	2,491,474	$ 2,391,413
Operating Segments | United States Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		854,679	784,503	2,385,392	2,535,945
Directly related cost of transportation and other expenses	[1]	443,930	421,432	1,270,981	1,387,511
Salaries and other operating expenses	[2]	253,452	261,323	772,835	785,282
Operating income		157,297	101,748	341,576	363,152
Identifiable assets at period end		2,611,417	2,572,404	2,611,417	2,572,404
Capital expenditures		9,299	3,762	17,775	15,829
Equity		1,628,893	1,797,123	1,628,893	1,797,123
Operating Segments | Other North America Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		114,264	106,293	331,837	326,398
Directly related cost of transportation and other expenses	[1]	67,626	63,671	199,710	201,984
Salaries and other operating expenses	[2]	35,261	38,275	102,684	108,892
Operating income		11,377	4,347	29,443	15,522
Identifiable assets at period end		192,370	200,711	192,370	200,711
Capital expenditures		198	302	2,172	932
Equity		35,825	46,264	35,825	46,264
Operating Segments | Latin America Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		61,981	47,327	151,787	151,994
Directly related cost of transportation and other expenses	[1]	38,973	28,409	88,077	90,139
Salaries and other operating expenses	[2]	18,605	16,405	49,920	52,172
Operating income		4,403	2,513	13,790	9,683
Identifiable assets at period end		108,985	110,708	108,985	110,708
Capital expenditures		101	84	383	360
Equity		42,670	54,096	42,670	54,096
Operating Segments | North Asia Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		914,417	515,340	2,096,709	1,607,788
Directly related cost of transportation and other expenses	[1]	763,781	398,681	1,702,401	1,238,996
Salaries and other operating expenses	[2]	86,566	66,546	224,588	205,976
Operating income		64,070	50,113	169,720	162,816
Identifiable assets at period end		727,724	512,746	727,724	512,746
Capital expenditures		296	168	933	1,110
Equity		221,519	225,229	221,519	225,229
Operating Segments | South Asia Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		445,308	207,006	960,970	631,001
Directly related cost of transportation and other expenses	[1]	369,905	145,292	757,167	437,392
Salaries and other operating expenses	[2]	51,307	42,138	135,303	132,984
Operating income		24,096	19,576	68,500	60,625
Identifiable assets at period end		376,283	217,018	376,283	217,018
Capital expenditures		839	409	2,938	744
Equity		124,387	91,712	124,387	91,712
Operating Segments | Europe Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		433,660	410,904	1,241,432	1,386,284
Directly related cost of transportation and other expenses	[1]	279,235	263,524	796,205	924,592
Salaries and other operating expenses	[2]	126,917	120,436	363,718	373,004
Operating income		27,508	26,944	81,509	88,688
Identifiable assets at period end		863,840	726,729	863,840	726,729
Capital expenditures		1,548	1,369	4,860	6,688
Equity		182,515	154,617	182,515	154,617
Operating Segments | Middle East Africa and India Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		177,145	119,849	481,600	386,524
Directly related cost of transportation and other expenses	[1]	131,098	81,643	353,839	261,482
Salaries and other operating expenses	[2]	33,283	27,351	92,099	85,003
Operating income		12,764	10,855	35,662	40,039
Identifiable assets at period end		319,627	260,619	319,627	260,619
Capital expenditures		10	1,899	1,354	2,937
Equity		164,665	161,882	164,665	161,882
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		(1,323)	(1,221)	(3,917)	(3,592)
Directly related cost of transportation and other expenses	[1]	(584)	(541)	(1,728)	(1,700)
Salaries and other operating expenses	[2]	(748)	(653)	(2,208)	(1,902)
Operating income		9	(27)	19	10
Identifiable assets at period end		(29,329)	(22,814)	(29,329)	(22,814)
Capital expenditures		0	0	0	0
Equity		$ (41,304)	$ (39,449)	$ (41,304)	$ (39,449)

[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.