Condensed Consolidated Statements of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Airfreight services	$ 667,257	$ 642,969	$ 1,314,395	$ 1,263,343
Ocean freight and ocean services	536,438	492,007	1,005,662	937,486
Customs brokerage and other services	395,446	368,248	770,729	715,603
Total revenues	1,599,141	1,503,224	3,090,786	2,916,432
Operating Expenses:
Airfreight services	503,213	483,016	986,095	947,935
Ocean freight and ocean services	423,716	380,727	791,091	725,650
Customs brokerage and other services	187,498	167,609	364,300	322,968
Salaries and related costs	260,767	255,569	516,709	503,986
Rent and occupancy costs	25,401	24,712	50,563	48,905
Depreciation and amortization	12,417	11,674	24,799	22,952
Selling and promotion	9,291	8,328	17,464	15,585
Other	34,395	28,010	62,119	56,354
Total operating expenses	1,456,698	1,359,645	2,813,140	2,644,335
Operating income	142,443	143,579	277,646	272,097
Other Income (Expense):
Interest income	2,764	3,070	5,461	6,313
Other, net	3,190	4,325	2,909	5,856
Other income, net	5,954	7,395	8,370	12,169
Earnings before income taxes	148,397	150,974	286,016	284,266
Income tax expense	56,669	58,311	110,093	110,993
Net earnings	91,728	92,663	175,923	173,273
Less net earnings attributable to the noncontrolling interest	426	348	797	643
Net earnings attributable to shareholders	$ 91,302	$ 92,315	$ 175,126	$ 172,630
Diluted earnings attributable to shareholders per share	$ 0.46	$ 0.45	$ 0.88	$ 0.83
Basic earnings attributable to shareholders per share	$ 0.46	$ 0.45	$ 0.88	$ 0.84
Dividends declared and paid per common share	$ 0.32	$ 0.30	$ 0.32	$ 0.30
Weighted average diluted shares outstanding	197,126,243	207,192,534	199,482,932	207,421,805
Weighted average basic shares outstanding	196,451,912	206,444,464	198,772,260	206,459,701