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Business Segments - Income Statement Items (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)
Information concerning revenue, gross profit and income from operations by segment
Number of reportable operating business segments | segment	3
Revenue:
Revenue	$ 8,678.8	$ 9,181.3
Gross profit:
Gross profit	251.1	243.4
Income from operations:
Income from operations	70.4	57.2
Operating Segments
Income from operations:
Income from operations	90.1	75.9
Corporate
Income from operations:
Income from operations	(19.7)	(18.7)
Aviation segment
Revenue:
Revenue	4,252.7	4,292.9
Gross profit:
Gross profit	114.3	110.0
Aviation segment | Operating Segments
Income from operations:
Income from operations	55.6	47.8
Land segment
Revenue:
Revenue	2,493.6	2,860.7
Gross profit:
Gross profit	101.5	102.2
Land segment | Operating Segments
Income from operations:
Income from operations	21.0	19.6
Marine segment
Revenue:
Revenue	1,932.5	2,027.7
Gross profit:
Gross profit	35.2	31.2
Marine segment | Operating Segments
Income from operations:
Income from operations	$ 13.5	$ 8.6

X

- Definition

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

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