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Business Segments - Income Statement Items (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)
Information concerning revenue, gross profit and income from operations by segment
Number of reportable operating business segments | segment			3
Revenue:
Total revenue	$ 8,086.2	$ 6,633.0	$ 16,280.4	$ 11,823.9
Gross profit:
Gross profit	231.0	218.5	462.4	440.0
Income from operations:
Income from operations	51.2	45.6	101.6	106.6
Aviation segment
Revenue:
Total revenue	3,508.4	2,621.6	6,825.8	4,841.0
Gross profit:
Gross profit	110.9	98.6	210.8	187.3
Land segment
Revenue:
Total revenue	2,564.0	2,171.0	5,347.4	3,866.0
Gross profit:
Gross profit	87.2	80.2	185.0	173.9
Marine segment
Revenue:
Total revenue	2,013.8	1,840.4	4,107.3	3,116.9
Gross profit:
Gross profit	32.9	39.7	66.6	78.8
Operating Segments
Income from operations:
Income from operations	69.2	64.4	139.3	143.8
Operating Segments | Aviation segment
Income from operations:
Income from operations	49.7	37.2	90.2	71.2
Operating Segments | Land segment
Income from operations:
Income from operations	12.2	16.2	33.6	50.1
Operating Segments | Marine segment
Income from operations:
Income from operations	7.2	11.0	15.5	22.5
Corporate
Income from operations:
Income from operations	$ (17.9)	$ (18.8)	$ (37.7)	$ (37.2)

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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