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Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 segment	Sep. 30, 2010
Business Segments
Number of reportable operating business segments			3
Revenue:
Total revenue	$ 9,510,792	$ 4,987,074	$ 25,298,907	$ 13,302,370
Gross profit:
Gross profit	170,847	112,107	472,717	318,494
Income from operations:
Income from operations	70,925	45,087	192,553	132,276
Operating Segments
Income from operations:
Income from operations	84,780	55,465	228,381	158,968
Aviation segment
Revenue:
Total revenue	3,540,503	1,857,154	9,551,924	5,007,920
Gross profit:
Gross profit	83,966	55,829	236,121	157,091
Income from operations:
Income from operations	41,228	31,564	117,022	86,959
Marine segment
Revenue:
Total revenue	4,045,176	2,356,093	10,577,578	6,731,356
Gross profit:
Gross profit	50,069	41,194	140,958	123,787
Income from operations:
Income from operations	24,899	20,667	68,017	64,647
Land segment
Revenue:
Total revenue	1,925,113	773,827	5,169,405	1,563,094
Gross profit:
Gross profit	36,812	15,084	95,638	37,616
Income from operations:
Income from operations	18,653	3,234	43,342	7,362
Corporate
Income from operations:
Corporate overhead	$ 13,855	$ 10,378	$ 35,828	$ 26,692

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount of general expenses not normally included in Other Operating Costs and Expenses.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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