Business Segment Information - Financial Information Regarding Company's Operations by Geographic Area (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 4,603,312	$ 3,609,093	$ 9,267,610	$ 6,807,913
Directly related cost of transportation and other expenses	[1]	3,440,948	2,598,633	6,957,059	4,845,917
Salaries and other operating expenses	[2]	656,382	599,815	1,342,809	1,165,836
Operating income		505,982	410,645	967,742	796,160
Identifiable assets at period end		7,361,142	5,953,171	7,361,142	5,953,171		$ 7,609,929
Capital expenditures		38,158	6,539	52,570	14,930
Depreciation and amortization		14,254	12,675	27,229	25,662
Equity		3,535,263	3,083,651	3,535,263	3,083,651	$ 3,849,331	$ 3,497,991	$ 2,878,650	$ 2,663,227
Operating Segments | United States Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,265,363	997,567	2,506,587	1,872,957
Directly related cost of transportation and other expenses	[1]	797,179	566,882	1,560,602	1,069,517
Salaries and other operating expenses	[2]	314,726	241,121	648,375	479,819
Operating income		153,458	189,564	297,610	323,621
Identifiable assets at period end		3,681,137	2,972,363	3,681,137	2,972,363
Capital expenditures		26,394	2,905	35,871	5,930
Equity		2,435,088	2,163,114	2,435,088	2,163,114
Operating Segments | Other North America Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		144,988	101,465	249,598	195,582
Directly related cost of transportation and other expenses	[1]	85,806	59,311	150,038	112,361
Salaries and other operating expenses	[2]	31,308	31,300	56,177	57,037
Operating income		27,874	10,854	43,383	26,184
Identifiable assets at period end		304,799	196,558	304,799	196,558
Capital expenditures		1,038	64	2,116	186
Equity		127,428	80,802	127,428	80,802
Operating Segments | Latin America Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		66,136	46,981	123,843	91,845
Directly related cost of transportation and other expenses	[1]	43,298	25,952	77,155	52,652
Salaries and other operating expenses	[2]	14,496	14,735	27,597	27,112
Operating income		8,342	6,294	19,091	12,081
Identifiable assets at period end		144,303	102,296	144,303	102,296
Capital expenditures		177	72	286	125
Equity		54,762	36,316	54,762	36,316
Operating Segments | North Asia Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,582,475	1,309,382	3,351,491	2,518,430
Directly related cost of transportation and other expenses	[1]	1,323,354	1,086,641	2,803,447	2,054,170
Salaries and other operating expenses	[2]	104,896	106,812	228,009	213,732
Operating income		154,225	115,929	320,035	250,528
Identifiable assets at period end		1,275,808	1,114,475	1,275,808	1,114,475
Capital expenditures		766	400	1,297	757
Equity		307,453	318,111	307,453	318,111
Operating Segments | South Asia Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		611,246	417,718	1,257,575	767,484
Directly related cost of transportation and other expenses	[1]	507,473	335,219	1,046,356	605,163
Salaries and other operating expenses	[2]	38,728	49,046	84,057	92,211
Operating income		65,045	33,453	127,162	70,110
Identifiable assets at period end		554,166	377,370	554,166	377,370
Capital expenditures		436	532	726	1,111
Equity		217,437	146,583	217,437	146,583
Operating Segments | Europe Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		658,307	544,949	1,234,098	1,011,282
Directly related cost of transportation and other expenses	[1]	464,399	376,856	882,019	683,765
Salaries and other operating expenses	[2]	115,394	123,408	224,663	232,863
Operating income		78,514	44,685	127,416	94,654
Identifiable assets at period end		1,081,246	929,706	1,081,246	929,706
Capital expenditures		7,666	2,100	9,724	5,654
Equity		297,572	255,006	297,572	255,006
Operating Segments | Middle East Africa and India Segment
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		275,948	192,186	546,629	352,692
Directly related cost of transportation and other expenses	[1]	220,162	148,290	438,262	269,399
Salaries and other operating expenses	[2]	37,258	34,026	75,300	64,301
Operating income		18,528	9,870	33,067	18,992
Identifiable assets at period end		365,532	291,406	365,532	291,406
Capital expenditures		1,681	466	2,550	1,167
Equity		134,388	128,148	134,388	128,148
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		(1,151)	(1,155)	(2,211)	(2,359)
Directly related cost of transportation and other expenses	[1]	(723)	(518)	(820)	(1,110)
Salaries and other operating expenses	[2]	(424)	(633)	(1,369)	(1,239)
Operating income		(4)	(4)	(22)	(10)
Identifiable assets at period end		(45,849)	(31,003)	(45,849)	(31,003)
Capital expenditures		0	0	0	0
Equity		$ (38,865)	$ (44,429)	$ (38,865)	$ (44,429)

[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.