Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015 item	Mar. 31, 2014
Business Segments
Number of reportable operating business segments	3us-gaap_NumberOfReportableSegments
Revenue:
Total revenue	$ 7,340.7us-gaap_Revenues	$ 10,550.9us-gaap_Revenues
Gross profit:
Gross profit	215.4us-gaap_GrossProfit	188.0us-gaap_GrossProfit
Income from operations:
Income from operations	71.5us-gaap_OperatingIncomeLoss	64.3us-gaap_OperatingIncomeLoss
Aviation Segment
Revenue:
Total revenue	2,897.0	4,249.8
Gross profit:
Gross profit	82.9	68.9
Marine segment
Revenue:
Total revenue	2,320.7	3,480.2
Gross profit:
Gross profit	53.9	47.8
Land Segment
Revenue:
Total revenue	2,123.0	2,820.9
Gross profit:
Gross profit	78.6	71.3
Operating Segments
Income from operations:
Income from operations	85.7	77.6
Operating Segments \| Aviation Segment
Income from operations:
Income from operations	27.8	30.1
Operating Segments \| Marine segment
Income from operations:
Income from operations	26.1	21.0
Operating Segments \| Land Segment
Income from operations:
Income from operations	31.8	26.5
Corporate
Income from operations:
Income from operations	$ 14.2	$ 13.3

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

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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