Condensed Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	$ 2,035,579	$ 1,957,559	$ 4,055,630	$ 3,811,821
Operating Expenses:
Salaries and related		356,351	350,948	713,261	690,843
Rent and occupancy		40,897	38,071	82,420	74,984
Depreciation and amortization		12,677	13,576	26,070	27,498
Selling and promotion		11,643	10,788	22,719	21,753
Other		47,926	45,579	91,537	86,904
Total operating expenses		1,843,378	1,773,975	3,675,828	3,435,419
Operating income		192,201	183,584	379,802	376,402
Other Income (Expense):
Interest income		6,516	5,153	12,622	9,467
Other, net		2,262	1,167	3,927	1,791
Other income (expense), net		8,778	6,320	16,549	11,258
Earnings before income taxes		200,979	189,904	396,351	387,660
Income tax expense		47,449	48,958	102,710	110,514
Net earnings		153,530	140,946	293,641	277,146
Less net earnings attributable to the noncontrolling interest		381	341	793	849
Net earnings attributable to shareholders		$ 153,149	$ 140,605	$ 292,848	$ 276,297
Diluted earnings attributable to shareholders per share		$ 0.88	$ 0.79	$ 1.67	$ 1.54
Basic earnings attributable to shareholders per share		$ 0.90	$ 0.80	$ 1.71	$ 1.58
Weighted average diluted shares outstanding		174,466	178,603	174,953	179,120
Weighted average basic shares outstanding		171,003	174,754	171,425	175,324
Airfreight services
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax		$ 741,577	$ 801,761	$ 1,456,478	$ 1,532,988
Operating Expenses:
Direct Operating Costs		542,639	593,325	1,051,849	1,106,829
Ocean freight and ocean services
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax		543,809	530,008	1,112,450	1,050,891
Operating Expenses:
Direct Operating Costs		390,299	385,156	810,630	764,574
Customs brokerage and other services
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax		750,193	625,790	1,486,702	1,227,942
Operating Expenses:
Direct Operating Costs		$ 440,946	$ 336,532	$ 877,342	$ 662,034

[1] In 2019, the Company revised its process to record the transfer, between its geographic operating segments, of revenues and the directly related cost of transportation expenses for freight service transactions between Company origin and destination locations. This change better aligns revenue reporting with the location where the services are performed, as well as the transactional reporting being developed as part of the Company’s new accounting systems and processes. The change in presentation had no impact on consolidated or segment net revenues or operating income. The 2019 results also include the effect of changing the presentation of certain import services from a net to a gross basis, which increased segment revenues and directly related operating expenses but did not change net revenues. The impact of these changes on reported segment revenues was immaterial and prior year segment revenues have not been revised.